RareX adds copper to Niobe mix with broad sulphide zone
Original announcement by stockhead on
- Company
- RareX
- Ticker
- REE
- Exchange
- Unavailable
- Region
- Western Australia
- Primary commodity
- Copper
- Secondary commodities
- Gallium, Niobium, Rare earths
- Document categories
- Drill results
- Extracted
- 2026-09-21 03:03:39 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
RareX has identified a new copper opportunity at its Niobe prospect in Western Australia after RC drilling intersected a 74m sulphide zone. Portable XRF readings show copper enrichment averaging 940ppm, with peak readings of 0.57%, adding copper to the project's existing gallium, niobium, and rare earth potential.
Reasoning: Discovery of a broad copper-bearing sulphide zone at the Niobe prospect, though results are currently based on preliminary pXRF readings rather than confirmed lab assays.
Positive factors
- newly discovered copper mineralisation
- broad 74m sulphide zone
- consistent pXRF anomalies
Negative factors
- laboratory assays still pending
- preliminary pXRF data only
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 2
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The discovery of copper adds a new dimension to the existing gallium, niobium and rare earths story at Niobe.
Evidence · text
“RareX has added copper to the commodity mix at its Khaleesi critical minerals project in WA after drilling at the Niobe prospect intersected a broad zone of anomalous sulphide mineralisation.”
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: The reported copper grades are based on preliminary pXRF readings and laboratory assays are still pending.
Evidence · text
“pXRF peaks at 5724ppm Cu, with lab assays still pending”
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Drill Results (2)
KRC012Niobe · copperGrade: 940Grade Unit: ppmIntercept: 74 mView all detailsHide details
Identity
- Hole ID
- KRC012
- Project
- Niobe
- Commodity
- copper
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- REE
Geometry
- Grade
- 940
- Grade Unit
- ppm
- Intercept
- 74 m
- From
- 77 m
- To
- 151 m
- Intercept Depth
- 77 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- KRC012:77-151
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-21T00:00:00.000Z
Reasoning: Broad copper anomaly detected via pXRF, but lacks laboratory assay verification.
Positive factors
- broad 74m interval
- consistent enrichment
Negative factors
- preliminary pXRF data
- assays pending
Evidence · text
“Portable XRF readings outlined copper enrichment over 74m from 77m to 151m downhole, with the interval averaging 940ppm Cu.”
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
KRC012Niobe · copperGrade: 5724Grade Unit: ppmView all detailsHide details
Identity
- Hole ID
- KRC012
- Project
- Niobe
- Commodity
- copper
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- REE
Geometry
- Grade
- 5724
- Grade Unit
- ppm
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- KRC012:77-151
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-21T00:00:00.000Z
Reasoning: High peak pXRF reading of 0.57% Cu indicates significant potential enrichment.
Positive factors
- high peak grade
Negative factors
- preliminary pXRF data
Evidence · text
“pXRF peaks at 5724ppm Cu”
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
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.