HER-25-25 Intersects Margins of a New Blind Copper Porphyry System at the Southern Flats Zone, Hercules Project, Idaho
Original announcement by tmx on
- Company
- Hercules Metals Corp.
- Ticker
- BIG
- Exchange
- TSX
- Region
- Idaho
- Primary commodity
- Copper
- Secondary commodities
- Molybdenum, Silver, Gold
- Document categories
- Drill results, Other
- Extracted
- 2026-08-21 02:21:42 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Hercules Metals Corp. has reported encouraging drill results from the Hercules Project in Idaho, where hole HER-25-25 intersected copper-molybdenum mineralization consistent with the margins of a new porphyry system. The results include a 176.78m intercept of 0.66% CuEq, and step-out drilling is currently underway to target the core of a large MT conductivity anomaly.
Reasoning: The drill hole HER-25-25 intersected significant copper-equivalent grades at the margins of a new porphyry system, coinciding with a large geophysical anomaly, suggesting high exploration potential.
Positive factors
- discovery of new porphyry margins
- strong CuEq grades
- large MT conductivity anomaly target
- step-out drilling underway
Negative factors
- hole stopped by fault zone
- apparent width only (true width not stated)
Facts used in scoring: 13
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The company is conducting step-out drilling (HER-26-01) to vector towards the porphyry center.
Evidence · text
“step-out drilling underway to vector towards the causative porphyry intrusion”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release details MSA Labs' certification (ISO 17025) and specific QA/QC protocols including CRMs and blanks.
Evidence · text
“an ISO 17025 and ISO 9001 certified laboratory”
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 states that insufficient data is available to state the true thickness of the mineralized intervals.
Evidence · text
“insufficient data are available at this time to state the true thickness of the mineralized intervals”
Extracted facts
Stored fact records: 13. Some facts used in scoring do not have a stored record.
Drill Results (13)
HER-25-25Hercules Project · copperGrade: 0.43Grade Unit: %Intercept: 271.27 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.43
- Grade Unit
- %
- Intercept
- 271.27 m
- From
- 871.73 m
- To
- 1143 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- HER-25-25:871.73-1143
- Mining Method
- open_pit
QA/QC
- Laboratory
- MSA Labs
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- blanks, standards, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: 0.43% Cu is a moderate grade for a porphyry system at the margins.
Positive factors
- consistent with porphyry margins
Negative factors
- marginal grade for porphyry
Evidence · table
“0.43”
Context: 271.27
HER-25-25Hercules Project · molybdenumGrade: 75Grade Unit: ppmIntercept: 271.27 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- molybdenum
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 75
- Grade Unit
- ppm
- Intercept
- 271.27 m
- From
- 871.73 m
- To
- 1143 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:871.73-1143
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Molybdenum reported as byproduct.
Evidence · table
“75”
Context: 271.27
HER-25-25Hercules Project · silverGrade: 2.6Grade Unit: g/tIntercept: 271.27 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 2.6
- Grade Unit
- g/t
- Intercept
- 271.27 m
- From
- 871.73 m
- To
- 1143 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:871.73-1143
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Silver reported as byproduct.
Evidence · table
“2.6”
Context: 271.27
HER-25-25Hercules Project · goldGrade: 0.024Grade Unit: g/tIntercept: 271.27 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- gold
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.024
- Grade Unit
- g/t
- Intercept
- 271.27 m
- From
- 871.73 m
- To
- 1143 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:871.73-1143
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Gold reported as trace byproduct.
Evidence · table
“0.024”
Context: 271.27
HER-25-25Hercules Project · copperGrade: 0.56Grade Unit: %Intercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.56
- Grade Unit
- %
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:914.4-1091.18
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: 0.56% Cu over 176m is a strong intercept for porphyry margins.
Positive factors
- stronger grades than typical margins
Evidence · table
“0.56”
Context: 176.78
HER-25-25Hercules Project · molybdenumGrade: 92Grade Unit: ppmIntercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- molybdenum
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 92
- Grade Unit
- ppm
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:914.4-1091.18
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Molybdenum reported as byproduct.
Evidence · table
“92”
Context: 176.78
HER-25-25Hercules Project · silverGrade: 2.2Grade Unit: g/tIntercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 2.2
- Grade Unit
- g/t
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:914.4-1091.18
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Silver reported as byproduct.
Evidence · table
“2.2”
Context: 176.78
HER-25-25Hercules Project · goldGrade: 0.031Grade Unit: g/tIntercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- gold
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.031
- Grade Unit
- g/t
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Sample Type
- drill
- Group ID
- HER-25-25:914.4-1091.18
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Gold reported as trace byproduct.
Evidence · table
“0.031”
Context: 176.78
HER-25-25Hercules Project · moGrade: 75Grade Unit: ppmIntercept: 271.27 mView all detailsHide details
Identity
- Hole ID
- HER-25-25
- Project
- Hercules Project
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 75
- Grade Unit
- ppm
- Intercept
- 271.27 m
- From
- 871.73 m
- To
- 1143 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- HER-25-25:871.73-1143
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Expanded from assay table: 75 ppm mo. No grade band defined for this commodity, so the score is a placeholder.
Negative factors
- No grade rubric for mo; intercept not scored.
Evidence · table
“75”
Context: HER-25-25
IncludingHercules Project · copperGrade: 0.56Grade Unit: %Intercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- Including
- Project
- Hercules Project
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.56
- Grade Unit
- %
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- Including:914.4-1091.18
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Expanded from assay table. 0.56 % copper is strong against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 99.0 %·m is moderate (grade alone is strong; the better of the two is used).
Positive factors
- 0.56 % copper is strong on the porphyry deposit band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“0.56”
Context: Including
IncludingHercules Project · moGrade: 92Grade Unit: ppmIntercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- Including
- Project
- Hercules Project
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 92
- Grade Unit
- ppm
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- Including:914.4-1091.18
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Expanded from assay table: 92 ppm mo. No grade band defined for this commodity, so the score is a placeholder.
Negative factors
- No grade rubric for mo; intercept not scored.
Evidence · table
“92”
Context: Including
IncludingHercules Project · silverGrade: 2.2Grade Unit: g/tIntercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- Including
- Project
- Hercules Project
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 2.2
- Grade Unit
- g/t
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- Including:914.4-1091.18
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Expanded from assay table. 2.2 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 388.9 g/t·m is weak (grade alone is below; the better of the two is used).
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“2.2”
Context: Including
IncludingHercules Project · goldGrade: 0.031Grade Unit: g/tIntercept: 176.78 mView all detailsHide details
Identity
- Hole ID
- Including
- Project
- Hercules Project
- Commodity
- gold
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.031
- Grade Unit
- g/t
- Intercept
- 176.78 m
- From
- 914.4 m
- To
- 1091.18 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- Including:914.4-1091.18
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-05-26T00:00:00.000Z
Reasoning: Expanded from assay table. 0.031 g/t gold is below against the porphyry deposit band [1, 0.5, 0.3, 0.15] g/t. Grade×width 5.5 g/t·m is below.
Negative factors
- 0.031 g/t gold is below the weak threshold (0.15 g/t) on the porphyry deposit band.
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“0.031”
Context: Including
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.