DLI: Yinnetharra and Mt Ida Exploration Update
Original announcement by asx on
- Company
- Delta Lithium Limited
- Ticker
- DLI
- Exchange
- ASX
- Region
- Western Australia
- Primary commodity
- Lithium
- Secondary commodities
- Tantalum, Rubidium, Gold, Silver, Copper, Tungsten
- Document categories
- Resource update, Drill results, Metallurgy, Other
- Extracted
- 2026-09-29 23:07:27 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Delta Lithium Limited provides an exploration update for its Yinnetharra and Mt Ida Lithium Projects in Western Australia. New drill intercepts at Mt Ida show high-grade lithium, tantalum, and rubidium, contributing to increased resource confidence and potential category upgrades. Metallurgical testwork is underway for Mt Ida to confirm the tantalum flowsheet and produce concentrates, while new reconnaissance drill targets for both lithium and gold have been generated at Yinnetharra, with drilling planned for Q4 2026.
Reasoning: The announcement provides positive updates on exploration and development activities across both projects, including new drill intercepts and metallurgical progress, alongside a strong financial position. However, the lack of true width for new intercepts and the re-release of some historical data temper the overall novelty.
Positive factors
- New high-grade lithium, tantalum, and rubidium drill intercepts at Mt Ida contribute to resource confidence and potential category upgrade.
- Ongoing metallurgical testwork at Mt Ida is progressing to confirm the tantalum flowsheet and produce concentrates, de-risking future development.
- New reconnaissance drill targets for both lithium and gold have been generated at Yinnetharra, indicating active exploration.
- The company maintains a strong cash balance and strategic investments.
Negative factors
- The Mt Ida drill intercepts are reported as downhole lengths and do not represent true widths, which may overstate actual thickness.
- The Yinnetharra gold drill result is a re-release of previously announced data, reducing its novelty.
Facts used in scoring: 60
Classification and evidence
Apparent Width Onlynegative
Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
Why it applies: The document explicitly states that the drill intercepts 'do not represent true widths' and that 'the geometry of the mineralisation is oblique'.
Evidence · text
“Intercepts are from Mt Ida gold drilling by Ballard Mining (BM1) and do not represent true widths”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The JORC Table 1 for Mt Ida states that 'Standards and blanks are inserted at a rate of 1 in 20 in RC and DD sampling, All QAQC analyses were within tolerance' and 'Samples have been analysed by external laboratories utilising industry standard methods'.
Evidence · text
“Standards and blanks are inserted at a rate of 1 in 20 in RC and DD sampling, All QAQC analyses were within tolerance”
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: The Competent Person's Statement names Mr. Olaf Frederickson as a Competent Person who is a Member of the Australasian Institute of Geoscientists (AIG) and consents to the inclusion of information.
Evidence · text
“Information in this Announcement that relates to exploration results is based upon work undertaken by Mr. Olaf Frederickson, a Competent Person who is a Member of the Australasian Institute of Geoscientists (AIG).”
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: The drill intercept for MSRC004 is explicitly stated as 'previously announced' on 16/06/2026.
Evidence · text
“2m @ 5.69 g/t Au in drillhole MSRC004, (announced 16/06/2026)”
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: The document states that 'Ballard Mining’s gold infill drill program has continued to return high-grade mineralised lithium intervals' and 'These additional infill holes have been used to refine the existing MRE model interpretation'.
Evidence · text
“Ballard Mining’s gold infill drill program has continued to return high-grade mineralised lithium intervals.”
Category Upgradepositive
Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.
Why it applies: The document states that the new drilling 'will contribute to converting the inferred category to indicated providing increased confidence in the resource model'.
Evidence · text
“will contribute to converting the inferred category to indicated providing increased confidence in the resource model”
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: The Competent Person's Statement explicitly mentions compliance with the '2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ (JORC Code)'.
Evidence · text
“as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ (JORC Code)”
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: The Yinnetharra MRE was 'released in March 2025', making it over a year old at the time of this September 2026 announcement.
Evidence · text
“A mineral resource estimate (MRE) update for Yinnetharra was released in March 2025”
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: The Mt Ida MRE includes a 'Measured' category with 0.5 Mt at 1.1% Li2O.
Evidence · table
“Measured”
Context: 0.5
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: The Mt Ida MRE includes an 'Indicated' category with 7.2 Mt at 1.3% Li2O.
Evidence · table
“Indicated”
Context: 7.2
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The Mt Ida MRE includes an 'Inferred' category with 7.1 Mt at 1.1% Li2O.
Evidence · table
“Inferred”
Context: 7.1
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The document refers to the 'Mt Ida Lithium updated Mineral Resource Estimate (MRE)' and states that new drill results 'will be incorporated into the next resource update'.
Evidence · text
“Mt Ida Lithium updated Mineral Resource Estimate (MRE) currently:”
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: The metallurgical testwork is being conducted on a '1 tonne composite', which indicates a significant scale of testing beyond bench-scale.
Evidence · text
“Metallurgical testwork on a 1 tonne composite of Mt Ida core is underway”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: the document describes a flotation route ("concentrate")
Extracted facts
Stored fact records: 59. Some facts used in scoring do not have a stored record.
Drill Results (11)
TNEX011Mt Ida · lithiumGrade: 1.2Grade Unit: %Intercept: 8 mView all detailsHide details
Identity
- Hole ID
- TNEX011
- Project
- Mt Ida
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 1.2
- Grade Unit
- %
- Intercept
- 8 m
- From
- 615 m
- To
- 623 m
- Intercept Depth
- 615 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- TNEX011:615-623
- Mining Method
- underground
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This high-grade lithium intercept from a resource conversion drilling program is positive for increasing confidence in the Mt Ida resource, despite the lack of true width disclosure.
Positive factors
- High-grade lithium intercept (1.2% Li2O) contributes to resource confidence and potential category upgrade.
- Intercept is part of a program aimed at converting inferred resources to indicated, de-risking the project.
Negative factors
- Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness.
Evidence · text
“8.0m @ 1.2% Li2O, 58ppm Ta2O5 and 0.31% Rb2O from 615m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
TNEX011Mt Ida · tantalumGrade: 58Grade Unit: ppm Ta2O5Intercept: 8 mView all detailsHide details
Identity
- Hole ID
- TNEX011
- Project
- Mt Ida
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 58
- Grade Unit
- ppm Ta2O5
- Intercept
- 8 m
- From
- 615 m
- To
- 623 m
- Intercept Depth
- 615 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- TNEX011:615-623
- Mining Method
- underground
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The tantalum grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence.
Positive factors
- Tantalum grade is reported alongside lithium, indicating polymetallic potential and additional value.
- Intercept contributes to resource confidence and potential category upgrade.
Negative factors
- Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness.
Evidence · text
“8.0m @ 1.2% Li2O, 58ppm Ta2O5 and 0.31% Rb2O from 615m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
TNEX011Mt Ida · rubidiumGrade: 0.31Grade Unit: %Intercept: 8 mView all detailsHide details
Identity
- Hole ID
- TNEX011
- Project
- Mt Ida
- Commodity
- rubidium
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 0.31
- Grade Unit
- %
- Intercept
- 8 m
- From
- 615 m
- To
- 623 m
- Intercept Depth
- 615 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- TNEX011:615-623
- Mining Method
- underground
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The rubidium grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence.
Positive factors
- Rubidium grade is reported alongside lithium and tantalum, indicating polymetallic potential and additional value.
- Intercept contributes to resource confidence and potential category upgrade.
Negative factors
- Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness.
Evidence · text
“8.0m @ 1.2% Li2O, 58ppm Ta2O5 and 0.31% Rb2O from 615m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
TNEX011Mt Ida · lithiumGrade: 1.4Grade Unit: %Intercept: 9.95 mView all detailsHide details
Identity
- Hole ID
- TNEX011
- Project
- Mt Ida
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 1.4
- Grade Unit
- %
- Intercept
- 9.95 m
- From
- 648.05 m
- To
- 658 m
- Intercept Depth
- 615 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- TNEX011:648.05-658
- Mining Method
- underground
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This high-grade and wide lithium intercept from a resource conversion drilling program is very positive for increasing confidence in the Mt Ida resource, despite the lack of true width disclosure.
Positive factors
- High-grade lithium intercept (1.4% Li2O) over a significant width (9.95m) contributes strongly to resource confidence and potential category upgrade.
- Intercept is part of a program aimed at converting inferred resources to indicated, de-risking the project.
Negative factors
- Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness.
Evidence · text
“9.95m @ 1.4 Li2O, 117ppm Ta2O5 and 0.45% Rb2O from 648.05m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
TNEX011Mt Ida · tantalumGrade: 117Grade Unit: ppm Ta2O5Intercept: 9.95 mView all detailsHide details
Identity
- Hole ID
- TNEX011
- Project
- Mt Ida
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 117
- Grade Unit
- ppm Ta2O5
- Intercept
- 9.95 m
- From
- 648.05 m
- To
- 658 m
- Intercept Depth
- 615 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- TNEX011:648.05-658
- Mining Method
- underground
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The tantalum grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence.
Positive factors
- Tantalum grade is reported alongside lithium, indicating polymetallic potential and additional value.
- Intercept contributes to resource confidence and potential category upgrade.
Negative factors
- Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness.
Evidence · text
“9.95m @ 1.4 Li2O, 117ppm Ta2O5 and 0.45% Rb2O from 648.05m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
TNEX011Mt Ida · rubidiumGrade: 0.45Grade Unit: %Intercept: 9.95 mView all detailsHide details
Identity
- Hole ID
- TNEX011
- Project
- Mt Ida
- Commodity
- rubidium
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 0.45
- Grade Unit
- %
- Intercept
- 9.95 m
- From
- 648.05 m
- To
- 658 m
- Intercept Depth
- 615 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- TNEX011:648.05-658
- Mining Method
- underground
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The rubidium grade reported within this intercept adds to the polymetallic value of the Mt Ida project, supporting resource confidence.
Positive factors
- Rubidium grade is reported alongside lithium and tantalum, indicating polymetallic potential and additional value.
- Intercept contributes to resource confidence and potential category upgrade.
Negative factors
- Intercept is reported as downhole length, and true width is not known, which may overstate actual thickness.
Evidence · text
“9.95m @ 1.4 Li2O, 117ppm Ta2O5 and 0.45% Rb2O from 648.05m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
MSRC004Yinnetharra · goldGrade: 5.69Grade Unit: g/tIntercept: 2 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MSRC004
- Project
- Yinnetharra
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 5.69
- Grade Unit
- g/t
- Intercept
- 2 m
- From
- 96 m
- To
- 98 m
- Intercept Depth
- 96 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- MSRC004:96-98
- Mining Method
- open_pit
Location
- CRS
- GDA94 MGA zone 50
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-06-16T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: While the gold grade is high, this is a re-released historical result, limiting its novelty. It does, however, provide context for ongoing gold exploration at Yinnetharra.
Positive factors
- High-grade gold intercept (5.69 g/t) indicates potential for gold mineralization at Yinnetharra.
Negative factors
- This is a previously announced result, reducing its novelty in this release.
- Intercept is reported as downhole length, and true width is not known.
Evidence · text
“2m @ 5.69 g/t gold from 96m in MSRC004 (previously announced)”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: the fact restates a prior release
Fact 8Yinnetharra · goldGrade: 6.83Grade Unit: g/tView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 6.83
- Grade Unit
- g/t
Classification
- Sample Type
- surface
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This high-grade rock chip sample is a strong positive indicator for gold exploration at Yinnetharra, providing new and compelling evidence for future drilling.
Positive factors
- High-grade gold rock chip (6.83 g/t) indicates strong gold mineralization potential at the Cathedral prospect.
- The sample is coincident with a broad gold in soil anomaly, supporting the target.
Evidence · text
“High-grade gold rockchip 6.83 g/t in sample M444”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 9Yinnetharra · silverGrade: 0.6Grade Unit: ppmView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- silver
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 0.6
- Grade Unit
- ppm
Classification
- Sample Type
- surface
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The presence of silver, even at a low grade, alongside high-grade gold in the rock chip sample adds to the polymetallic potential of the target.
Positive factors
- Silver is present alongside high-grade gold, indicating polymetallic potential.
Evidence · table
“0.6”
Context: M444
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 10Yinnetharra · copperGrade: 413Grade Unit: ppmView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- copper
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 413
- Grade Unit
- ppm
Classification
- Sample Type
- surface
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The presence of copper alongside high-grade gold in the rock chip sample adds to the polymetallic potential of the target.
Positive factors
- Copper is present alongside high-grade gold, indicating polymetallic potential.
Evidence · table
“413”
Context: M444
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 11Yinnetharra · tungstenGrade: 3.23Grade Unit: ppmView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tungsten
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DLI
Geometry
- Grade
- 3.23
- Grade Unit
- ppm
Classification
- Sample Type
- surface
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The presence of tungsten alongside high-grade gold in the rock chip sample adds to the polymetallic potential of the target.
Positive factors
- Tungsten is present alongside high-grade gold, indicating polymetallic potential.
Evidence · table
“3.23”
Context: M444
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Resource Estimates (48)
indicatedYinnetharra · lithiumTonnes: 16100000Grade: 1Grade Unit: % Li2OContained Metal: 158Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:e0ab1f37bf9abaeafce4
Resource Data
- Category
- indicated
- Tonnes
- 16100000
- Grade
- 1
- Grade Unit
- % Li2O
- Contained Metal
- 158
- Contained Unit
- kt
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This historical indicated resource provides a baseline for the Yinnetharra project, showing a substantial lithium endowment, though it is not new information.
Positive factors
- Significant indicated resource tonnage (16.1 Mt) at a good grade (1.0% Li2O) for lithium.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“1.0”
Context: 16.1
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · tantalumTonnes: 16100000Grade: 77Grade Unit: ppm Ta2O5Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:e0ab1f37bf9abaeafce4
Resource Data
- Category
- indicated
- Tonnes
- 16100000
- Grade
- 77
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated tantalum resource provides additional context for the polymetallic nature of the Yinnetharra project.
Positive factors
- Tantalum is present as a byproduct in the indicated resource, adding potential value.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“77”
Context: 16.1
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
inferredYinnetharra · lithiumTonnes: 5800000Grade: 0.9Grade Unit: % Li2OContained Metal: 54Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:94841cfb9be1c6fa93f8
Resource Data
- Category
- inferred
- Tonnes
- 5800000
- Grade
- 0.9
- Grade Unit
- % Li2O
- Contained Metal
- 54
- Contained Unit
- kt
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This historical inferred resource contributes to the overall scale of the Yinnetharra project, but its lower confidence category and historical nature limit its impact.
Positive factors
- Inferred resource adds to the overall lithium endowment of the Yinnetharra project.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“0.9”
Context: 5.8
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 5800000Grade: 69Grade Unit: ppm Ta2O5Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:94841cfb9be1c6fa93f8
Resource Data
- Category
- inferred
- Tonnes
- 5800000
- Grade
- 69
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource provides additional context for the polymetallic nature of the Yinnetharra project, but its lower confidence category and historical nature limit its impact.
Positive factors
- Tantalum is present as a byproduct in the inferred resource, adding potential value.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“69”
Context: 5.8
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Fact 5Yinnetharra · lithiumTonnes: 21900000Grade: 1Grade Unit: % Li2OContained Metal: 212Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:9f7225e0fc9fb7e61176
Resource Data
- Tonnes
- 21900000
- Grade
- 1
- Grade Unit
- % Li2O
- Contained Metal
- 212
- Contained Unit
- kt
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This historical total resource provides a significant baseline for the Yinnetharra project, though it is not new information.
Positive factors
- Total resource of 21.9 Mt at 1.0% Li2O indicates a significant lithium endowment for the Yinnetharra project.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“1.0”
Context: 21.9
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 6Yinnetharra · tantalumTonnes: 21900000Grade: 75Grade Unit: ppm Ta2O5Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:9f7225e0fc9fb7e61176
Resource Data
- Tonnes
- 21900000
- Grade
- 75
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total tantalum resource provides additional context for the polymetallic nature of the Yinnetharra project.
Positive factors
- Tantalum is present as a byproduct in the total resource, adding potential value.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“75”
Context: 21.9
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
measuredMt Ida · lithiumTonnes: 500000Grade: 1.1Grade Unit: % Li2OContained Metal: 5.9Contained Unit: ktView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:81118780d75007d34ed1
Resource Data
- Category
- measured
- Tonnes
- 500000
- Grade
- 1.1
- Grade Unit
- % Li2O
- Contained Metal
- 5.9
- Contained Unit
- kt
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The measured resource at Mt Ida provides a high-confidence base for project development, reflecting a well-understood portion of the deposit.
Positive factors
- Measured resource category indicates high geological confidence for this portion of the Mt Ida project.
- Good grade (1.1% Li2O) for a measured resource.
Evidence · table
“1.1”
Context: 0.5
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
measuredMt Ida · tantalumTonnes: 500000Grade: 256Grade Unit: ppm Ta2O5View all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:81118780d75007d34ed1
Resource Data
- Category
- measured
- Tonnes
- 500000
- Grade
- 256
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The measured tantalum resource at Mt Ida provides additional high-confidence context for the polymetallic nature of the project.
Positive factors
- Tantalum is present as a byproduct in the measured resource, adding potential value.
Evidence · table
“256”
Context: 0.5
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
measuredMt Ida · rubidiumTonnes: 500000Grade: 0.39Grade Unit: % Rb2OView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- rubidium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:81118780d75007d34ed1
Resource Data
- Category
- measured
- Tonnes
- 500000
- Grade
- 0.39
- Grade Unit
- % Rb2O
- Cutoff Grade
- 0.5
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The measured rubidium resource at Mt Ida provides additional high-confidence context for the polymetallic nature of the project.
Positive factors
- Rubidium is present as a byproduct in the measured resource, adding potential value.
Evidence · table
“0.39”
Context: 0.5
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
indicatedMt Ida · lithiumTonnes: 7200000Grade: 1.3Grade Unit: % Li2OContained Metal: 96Contained Unit: ktView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:5f18db69be5d1a238b00
Resource Data
- Category
- indicated
- Tonnes
- 7200000
- Grade
- 1.3
- Grade Unit
- % Li2O
- Contained Metal
- 96
- Contained Unit
- kt
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The indicated resource at Mt Ida provides a solid base for project development, reflecting good geological confidence.
Positive factors
- Significant indicated resource tonnage (7.2 Mt) at a good grade (1.3% Li2O) for lithium.
Evidence · table
“1.3”
Context: 7.2
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedMt Ida · tantalumTonnes: 7200000Grade: 215Grade Unit: ppm Ta2O5View all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:5f18db69be5d1a238b00
Resource Data
- Category
- indicated
- Tonnes
- 7200000
- Grade
- 215
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The indicated tantalum resource at Mt Ida provides additional context for the polymetallic nature of the project.
Positive factors
- Tantalum is present as a byproduct in the indicated resource, adding potential value.
Evidence · table
“215”
Context: 7.2
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
indicatedMt Ida · rubidiumTonnes: 7200000Grade: 0.45Grade Unit: % Rb2OView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- rubidium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:5f18db69be5d1a238b00
Resource Data
- Category
- indicated
- Tonnes
- 7200000
- Grade
- 0.45
- Grade Unit
- % Rb2O
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The indicated rubidium resource at Mt Ida provides additional context for the polymetallic nature of the project.
Positive factors
- Rubidium is present as a byproduct in the indicated resource, adding potential value.
Evidence · table
“0.45”
Context: 7.2
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
inferredMt Ida · lithiumTonnes: 7100000Grade: 1.1Grade Unit: % Li2OContained Metal: 83Contained Unit: ktView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:d502b9b815690a40596e
Resource Data
- Category
- inferred
- Tonnes
- 7100000
- Grade
- 1.1
- Grade Unit
- % Li2O
- Contained Metal
- 83
- Contained Unit
- kt
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The inferred resource at Mt Ida contributes to the overall scale of the project, but its lower confidence category limits its immediate impact.
Positive factors
- Inferred resource adds to the overall lithium endowment of the Mt Ida project.
Negative factors
- Inferred category has lower geological confidence.
Evidence · table
“1.1”
Context: 7.1
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredMt Ida · tantalumTonnes: 7100000Grade: 126Grade Unit: ppm Ta2O5View all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:d502b9b815690a40596e
Resource Data
- Category
- inferred
- Tonnes
- 7100000
- Grade
- 126
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The inferred tantalum resource at Mt Ida provides additional context for the polymetallic nature of the project, but its lower confidence category limits its immediate impact.
Positive factors
- Tantalum is present as a byproduct in the inferred resource, adding potential value.
Negative factors
- Inferred category has lower geological confidence.
Evidence · table
“126”
Context: 7.1
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
inferredMt Ida · rubidiumTonnes: 7100000Grade: 0.38Grade Unit: % Rb2OView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- rubidium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:d502b9b815690a40596e
Resource Data
- Category
- inferred
- Tonnes
- 7100000
- Grade
- 0.38
- Grade Unit
- % Rb2O
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The inferred rubidium resource at Mt Ida provides additional context for the polymetallic nature of the project, but its lower confidence category limits its immediate impact.
Positive factors
- Rubidium is present as a byproduct in the inferred resource, adding potential value.
Negative factors
- Inferred category has lower geological confidence.
Evidence · table
“0.38”
Context: 7.1
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Fact 16Mt Ida · lithiumTonnes: 14800000Grade: 1.2Grade Unit: % Li2OContained Metal: 190Contained Unit: ktView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:f380a5127cca5227a58d
Resource Data
- Tonnes
- 14800000
- Grade
- 1.2
- Grade Unit
- % Li2O
- Contained Metal
- 190
- Contained Unit
- kt
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The total resource at Mt Ida provides a significant baseline for the project, reflecting its current scale and grade.
Positive factors
- Total resource of 14.8 Mt at 1.2% Li2O indicates a significant lithium endowment for the Mt Ida project.
Evidence · table
“1.2”
Context: 14.8
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 17Mt Ida · tantalumTonnes: 14800000Grade: 173Grade Unit: ppm Ta2O5View all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:f380a5127cca5227a58d
Resource Data
- Tonnes
- 14800000
- Grade
- 173
- Grade Unit
- ppm Ta2O5
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The total tantalum resource at Mt Ida provides additional context for the polymetallic nature of the project.
Positive factors
- Tantalum is present as a byproduct in the total resource, adding potential value.
Evidence · table
“173”
Context: 14.8
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Fact 18Mt Ida · rubidiumTonnes: 14800000Grade: 0.42Grade Unit: % Rb2OView all detailsHide details
Identity
- Project
- Mt Ida
- Commodity
- rubidium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:f380a5127cca5227a58d
Resource Data
- Tonnes
- 14800000
- Grade
- 0.42
- Grade Unit
- % Rb2O
- Cutoff Grade
- 0.3
- Cutoff Unit
- % Li2O
Prior Estimate
- Resource Date
- 2026-09-29
Lab
- Laboratory
- ALS, Nagrom, NAL, SGS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The total rubidium resource at Mt Ida provides additional context for the polymetallic nature of the project.
Positive factors
- Rubidium is present as a byproduct in the total resource, adding potential value.
Evidence · table
“0.42”
Context: 14.8
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
indicatedYinnetharra · tantalumTonnes: 3700000Grade: 82Grade Unit: ppm Ta2O5Contained Metal: 0.3Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:ec27577e109c103a2223
- Deposit or zone
- MT1
Resource Data
- Category
- indicated
- Tonnes
- 3700000
- Grade
- 82
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.3
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated tantalum resource for the MT1 zone provides specific detail on the tantalum distribution within Yinnetharra.
Positive factors
- Indicated tantalum resource for the MT1 zone contributes to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“82”
Context: 3.7
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · lithiumTonnes: 3700000Grade: 0.1Grade Unit: % Li2OContained Metal: 3Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:ec27577e109c103a2223
- Deposit or zone
- MT1
Resource Data
- Category
- indicated
- Tonnes
- 3700000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 3
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated lithium resource for the MT1 zone is low grade and primarily a byproduct, limiting its individual impact.
Positive factors
- Lithium is present as a byproduct in the indicated tantalum resource for the MT1 zone.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
Evidence · table
“0.1”
Context: 3.7
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 600000Grade: 94Grade Unit: ppm Ta2O5Contained Metal: 0.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:1e054db548e63c7f4953
- Deposit or zone
- MT1
Resource Data
- Category
- inferred
- Tonnes
- 600000
- Grade
- 94
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT1 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT1 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“94”
Context: 0.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 600000Grade: 0Grade Unit: % Li2OContained Metal: 0Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:1e054db548e63c7f4953
- Deposit or zone
- MT1
Resource Data
- Category
- inferred
- Tonnes
- 600000
- Grade
- 0
- Grade Unit
- % Li2O
- Contained Metal
- 0
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT1 zone is negligible, providing little positive impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Very low lithium grade (0.0% Li2O) indicates negligible lithium content.
- Inferred category has lower geological confidence.
Evidence · table
“0.0”
Context: 0.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 200000Grade: 115Grade Unit: ppm Ta2O5Contained Metal: 0Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:f5baa69be9a3bfb4280c
- Deposit or zone
- MT20
Resource Data
- Category
- inferred
- Tonnes
- 200000
- Grade
- 115
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT20 zone provides additional context, but its small scale, lower confidence, and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT20 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“115”
Context: 0.2
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 200000Grade: 0.1Grade Unit: % Li2OContained Metal: 0Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:f5baa69be9a3bfb4280c
- Deposit or zone
- MT20
Resource Data
- Category
- inferred
- Tonnes
- 200000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 0
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT20 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 0.2
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · tantalumTonnes: 4300000Grade: 123Grade Unit: ppm Ta2O5Contained Metal: 0.5Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:afe3dfb79c44c76ae9af
- Deposit or zone
- MT36
Resource Data
- Category
- indicated
- Tonnes
- 4300000
- Grade
- 123
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.5
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated tantalum resource for the MT36 zone provides specific detail on the tantalum distribution within Yinnetharra.
Positive factors
- Indicated tantalum resource for the MT36 zone contributes to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“123”
Context: 4.3
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · lithiumTonnes: 4300000Grade: 0.1Grade Unit: % Li2OContained Metal: 5Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:afe3dfb79c44c76ae9af
- Deposit or zone
- MT36
Resource Data
- Category
- indicated
- Tonnes
- 4300000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 5
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated lithium resource for the MT36 zone is low grade and primarily a byproduct, limiting its individual impact.
Positive factors
- Lithium is present as a byproduct in the indicated tantalum resource for the MT36 zone.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
Evidence · table
“0.1”
Context: 4.3
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 600000Grade: 106Grade Unit: ppm Ta2O5Contained Metal: 0.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:6122f56d7b84865d1ebe
- Deposit or zone
- MT36
Resource Data
- Category
- inferred
- Tonnes
- 600000
- Grade
- 106
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT36 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT36 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“106”
Context: 0.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 600000Grade: 0.1Grade Unit: % Li2OContained Metal: 1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:6122f56d7b84865d1ebe
- Deposit or zone
- MT36
Resource Data
- Category
- inferred
- Tonnes
- 600000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT36 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 0.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · tantalumTonnes: 300000Grade: 175Grade Unit: ppm Ta2O5Contained Metal: 0.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:4784b879e926e3948bbe
- Deposit or zone
- MT42
Resource Data
- Category
- indicated
- Tonnes
- 300000
- Grade
- 175
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated tantalum resource for the MT42 zone provides specific detail on the tantalum distribution within Yinnetharra.
Positive factors
- Indicated tantalum resource for the MT42 zone contributes to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“175”
Context: 0.3
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · lithiumTonnes: 300000Grade: 0.2Grade Unit: % Li2OContained Metal: 1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:4784b879e926e3948bbe
- Deposit or zone
- MT42
Resource Data
- Category
- indicated
- Tonnes
- 300000
- Grade
- 0.2
- Grade Unit
- % Li2O
- Contained Metal
- 1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated lithium resource for the MT42 zone is low grade and primarily a byproduct, limiting its individual impact.
Positive factors
- Lithium is present as a byproduct in the indicated tantalum resource for the MT42 zone.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.2% Li2O).
Evidence · table
“0.2”
Context: 0.3
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 2500000Grade: 208Grade Unit: ppm Ta2O5Contained Metal: 0.5Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:566797278942bebea378
- Deposit or zone
- MT42
Resource Data
- Category
- inferred
- Tonnes
- 2500000
- Grade
- 208
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.5
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT42 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT42 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“208”
Context: 2.5
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 2500000Grade: 0.1Grade Unit: % Li2OContained Metal: 2Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:566797278942bebea378
- Deposit or zone
- MT42
Resource Data
- Category
- inferred
- Tonnes
- 2500000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 2
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT42 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 2.5
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · tantalumTonnes: 2100000Grade: 186Grade Unit: ppm Ta2O5Contained Metal: 0.4Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:2ef3901c169eef8d2ef6
- Deposit or zone
- MT47
Resource Data
- Category
- indicated
- Tonnes
- 2100000
- Grade
- 186
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.4
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated tantalum resource for the MT47 zone provides specific detail on the tantalum distribution within Yinnetharra.
Positive factors
- Indicated tantalum resource for the MT47 zone contributes to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“186”
Context: 2.1
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
indicatedYinnetharra · lithiumTonnes: 2100000Grade: 0.1Grade Unit: % Li2OContained Metal: 3Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:2ef3901c169eef8d2ef6
- Deposit or zone
- MT47
Resource Data
- Category
- indicated
- Tonnes
- 2100000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 3
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical indicated lithium resource for the MT47 zone is low grade and primarily a byproduct, limiting its individual impact.
Positive factors
- Lithium is present as a byproduct in the indicated tantalum resource for the MT47 zone.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
Evidence · table
“0.1”
Context: 2.1
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 500000Grade: 257Grade Unit: ppm Ta2O5Contained Metal: 0.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:26ebd441fe7c0a5a9973
- Deposit or zone
- MT47
Resource Data
- Category
- inferred
- Tonnes
- 500000
- Grade
- 257
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT47 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT47 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“257”
Context: 0.5
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 500000Grade: 0.1Grade Unit: % Li2OContained Metal: 0Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:26ebd441fe7c0a5a9973
- Deposit or zone
- MT47
Resource Data
- Category
- inferred
- Tonnes
- 500000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 0
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT47 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 0.5
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 600000Grade: 113Grade Unit: ppm Ta2O5Contained Metal: 0.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:cc0b5f6eb69e7a95df86
- Deposit or zone
- MT67
Resource Data
- Category
- inferred
- Tonnes
- 600000
- Grade
- 113
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT67 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT67 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“113”
Context: 0.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 600000Grade: 0.2Grade Unit: % Li2OContained Metal: 1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:cc0b5f6eb69e7a95df86
- Deposit or zone
- MT67
Resource Data
- Category
- inferred
- Tonnes
- 600000
- Grade
- 0.2
- Grade Unit
- % Li2O
- Contained Metal
- 1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT67 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.2% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.2”
Context: 0.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 1600000Grade: 105Grade Unit: ppm Ta2O5Contained Metal: 0.2Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:5543cb1615669694c7ac
- Deposit or zone
- MT69
Resource Data
- Category
- inferred
- Tonnes
- 1600000
- Grade
- 105
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.2
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT69 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT69 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“105”
Context: 1.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 1600000Grade: 0.1Grade Unit: % Li2OContained Metal: 2Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:5543cb1615669694c7ac
- Deposit or zone
- MT69
Resource Data
- Category
- inferred
- Tonnes
- 1600000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 2
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT69 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 1.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · tantalumTonnes: 700000Grade: 161Grade Unit: ppm Ta2O5Contained Metal: 0.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:b8f7b4702c3b5438f44e
- Deposit or zone
- MT70
Resource Data
- Category
- inferred
- Tonnes
- 700000
- Grade
- 161
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 0.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred tantalum resource for the MT70 zone provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Inferred tantalum resource for the MT70 zone adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“161”
Context: 0.7
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
inferredYinnetharra · lithiumTonnes: 700000Grade: 0.1Grade Unit: % Li2OContained Metal: 1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:b8f7b4702c3b5438f44e
- Deposit or zone
- MT70
Resource Data
- Category
- inferred
- Tonnes
- 700000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical inferred lithium resource for the MT70 zone is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 0.7
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 43Yinnetharra · tantalumTonnes: 10400000Grade: 122Grade Unit: ppm Ta2O5Contained Metal: 1.3Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:1b62917ed4356779daf3
Resource Data
- Tonnes
- 10400000
- Grade
- 122
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 1.3
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total indicated tantalum resource provides a significant baseline for the Yinnetharra project, though it is not new information.
Positive factors
- Total indicated tantalum resource of 10.4 Mt at 122 ppm Ta2O5 adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“122”
Context: 10.4
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 44Yinnetharra · lithiumTonnes: 10400000Grade: 0.1Grade Unit: % Li2OContained Metal: 12Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:1b62917ed4356779daf3
Resource Data
- Tonnes
- 10400000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 12
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total indicated lithium resource is low grade and primarily a byproduct, limiting its individual impact.
Positive factors
- Lithium is present as a byproduct in the total indicated tantalum resource.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
Evidence · table
“0.1”
Context: 10.4
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 45Yinnetharra · tantalumTonnes: 7100000Grade: 156Grade Unit: ppm Ta2O5Contained Metal: 1.1Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:3a508d644951477fd2f0
Resource Data
- Tonnes
- 7100000
- Grade
- 156
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 1.1
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total inferred tantalum resource provides additional context, but its lower confidence and historical nature limit its impact.
Positive factors
- Total inferred tantalum resource of 7.1 Mt at 156 ppm Ta2O5 adds to the overall tantalum endowment of Yinnetharra.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Inferred category has lower geological confidence.
Evidence · table
“156”
Context: 7.1
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 46Yinnetharra · lithiumTonnes: 7100000Grade: 0.1Grade Unit: % Li2OContained Metal: 7Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:3a508d644951477fd2f0
Resource Data
- Tonnes
- 7100000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 7
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total inferred lithium resource is low grade and primarily a byproduct, limiting its individual impact.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
- Inferred category has lower geological confidence.
Evidence · table
“0.1”
Context: 7.1
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 47Yinnetharra · tantalumTonnes: 17500000Grade: 136Grade Unit: ppm Ta2O5Contained Metal: 2.4Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- tantalum
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:cc3d8edf8e26de5bfeff
Resource Data
- Tonnes
- 17500000
- Grade
- 136
- Grade Unit
- ppm Ta2O5
- Contained Metal
- 2.4
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total tantalum resource provides a significant baseline for the Yinnetharra project, though it is not new information.
Positive factors
- Total tantalum resource of 17.5 Mt at 136 ppm Ta2O5 indicates a significant tantalum endowment for the Yinnetharra project.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
Evidence · table
“136”
Context: 17.5
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
Fact 48Yinnetharra · lithiumTonnes: 17500000Grade: 0.1Grade Unit: % Li2OContained Metal: 19Contained Unit: ktHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Yinnetharra
- Commodity
- lithium
- Region
- australia_wa
- Reported Region
- Western Australia
- Ticker
- DLI
Resource scope
- Estimate type
- resource
- Reporting standards
- jorc
- QP Signed
- Yes
- Qualified person names
- Mr. Olaf Frederickson
- Resource group id
- resource:cc3d8edf8e26de5bfeff
Resource Data
- Tonnes
- 17500000
- Grade
- 0.1
- Grade Unit
- % Li2O
- Contained Metal
- 19
- Contained Unit
- kt
- Cutoff Grade
- 65
- Cutoff Unit
- ppm Ta2O5
Prior Estimate
- Resource Date
- 2025-03-01
Lab
- Laboratory
- ALS Laboratories
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-03-01T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: The historical total lithium resource is low grade and primarily a byproduct, limiting its individual impact.
Positive factors
- Lithium is present as a byproduct in the total tantalum resource.
Negative factors
- This is a historical estimate from March 2025, reducing its novelty in this announcement.
- Low lithium grade (0.1% Li2O).
Evidence · table
“0.1”
Context: 17.5
Tags used in scoring
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: reporting_standards includes jorc
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.