Hercules Metals Intersects 81 m of 1.5% Copper Within 346 m of 0.66% Copper in First 2025 Drill Hole Completed at the Leviathan Porphyry System in Idaho
Original announcement by tmx on
- Company
- Hercules Metals Corp.
- Ticker
- BIG
- Exchange
- TSX
- Region
- Idaho
- Primary commodity
- Copper
- Secondary commodities
- Silver, Molybdenum
- Document categories
- Drill results
- Extracted
- 2026-08-21 06:55:18 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Hercules Metals reported strong results from its first 2025 drill hole, HER-25-02, at the Leviathan porphyry system in Idaho. The hole intersected 81 m of 1.5% Cu and 8.9 g/t Ag, extending the system's strike length to 1.3 km.
Reasoning: The drill hole HER-25-02 returned high-grade copper (1.5% Cu) and silver (8.9 g/t Ag) over a significant width (81 m) in a step-out location, validating the porphyry model and extending the known strike length.
Positive factors
- High-grade hypogene enrichment intersected
- Step-out drilling successfully extended strike length
- Strong geophysical correlation with drilling
- QA/QC protocols clearly disclosed
Facts used in scoring: 18
Extracted facts
Stored fact records: 18. Some facts used in scoring do not have a stored record.
Drill Results (18)
HER-25-02Leviathan · copperGrade: 0.66Grade Unit: %Intercept: 346 mView all detailsHide details
Identity
- Hole ID
- HER-25-02
- Project
- Leviathan
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.66
- Grade Unit
- %
- Intercept
- 346 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- HER-25-02:unknown
- 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
- 2025-09-17T00:00:00.000Z
Reasoning: 346 m at 0.66% Cu provides significant volume.
Positive factors
- Broad mineralized zone
Evidence · text
“broad zone of 346 m grading 0.66% Cu, 3.2 g/t Ag and 78 ppm Mo”
HER-25-02Leviathan · silverGrade: 3.2Grade Unit: g/tIntercept: 346 mView all detailsHide details
Identity
- Hole ID
- HER-25-02
- Project
- Leviathan
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 3.2
- Grade Unit
- g/t
- Intercept
- 346 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- HER-25-02:unknown
- 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
- 2025-09-17T00:00:00.000Z
Reasoning: Silver grade within the broad copper zone.
Evidence · text
“broad zone of 346 m grading 0.66% Cu, 3.2 g/t Ag and 78 ppm Mo”
HER-25-02Leviathan · molybdenumGrade: 78Grade Unit: ppmIntercept: 346 mView all detailsHide details
Identity
- Hole ID
- HER-25-02
- Project
- Leviathan
- Commodity
- molybdenum
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 78
- Grade Unit
- ppm
- Intercept
- 346 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- HER-25-02:unknown
- 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
- 2025-09-17T00:00:00.000Z
Reasoning: Molybdenum presence within the broad copper zone.
Evidence · text
“broad zone of 346 m grading 0.66% Cu, 3.2 g/t Ag and 78 ppm Mo”
HER-25-02Leviathan · copperGrade: 1.28Grade Unit: %Intercept: 15.5 mView all detailsHide details
Identity
- Hole ID
- HER-25-02
- Project
- Leviathan
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 1.28
- Grade Unit
- %
- Intercept
- 15.5 m
- From
- 316.75 m
- To
- 332.23 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- HER-25-02:316.75-332.23
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 1.28 % copper is exceptional against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 19.8 %·m is below (grade alone is exceptional; the better of the two is used).
Positive factors
- 1.28 % copper is exceptional on the porphyry deposit band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“1.28”
Context: HER-25-02
HER-25-02Leviathan · silverGrade: 22.8Grade Unit: g/tIntercept: 15.5 mView all detailsHide details
Identity
- Hole ID
- HER-25-02
- Project
- Leviathan
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 22.8
- Grade Unit
- g/t
- Intercept
- 15.5 m
- From
- 316.75 m
- To
- 332.23 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- HER-25-02:316.75-332.23
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 22.8 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 353.4 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
“22.8”
Context: HER-25-02
HER-25-02Leviathan · moGrade: 36Grade Unit: ppmIntercept: 15.5 mView all detailsHide details
Identity
- Hole ID
- HER-25-02
- Project
- Leviathan
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 36
- Grade Unit
- ppm
- Intercept
- 15.5 m
- From
- 316.75 m
- To
- 332.23 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- HER-25-02:316.75-332.23
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table: 36 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
“36”
Context: HER-25-02
ANDLeviathan · copperGrade: 0.61Grade Unit: %Intercept: 385.9 mView all detailsHide details
Identity
- Hole ID
- AND
- Project
- Leviathan
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.61
- Grade Unit
- %
- Intercept
- 385.9 m
- From
- 434.34 m
- To
- 820.25 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- AND:434.34-820.25
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 0.61 % copper is strong against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 235.4 %·m is strong.
Positive factors
- 0.61 % copper is strong on the porphyry deposit band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“0.61”
Context: AND
ANDLeviathan · silverGrade: 3Grade Unit: g/tIntercept: 385.9 mView all detailsHide details
Identity
- Hole ID
- AND
- Project
- Leviathan
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 3
- Grade Unit
- g/t
- Intercept
- 385.9 m
- From
- 434.34 m
- To
- 820.25 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- AND:434.34-820.25
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 3 g/t silver is moderate against the default band [500, 200, 100, 30] g/t. Grade×width 1157.7 g/t·m is moderate (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
“3.0”
Context: AND
ANDLeviathan · moGrade: 77Grade Unit: ppmIntercept: 385.9 mView all detailsHide details
Identity
- Hole ID
- AND
- Project
- Leviathan
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 77
- Grade Unit
- ppm
- Intercept
- 385.9 m
- From
- 434.34 m
- To
- 820.25 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- AND:434.34-820.25
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table: 77 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
“77”
Context: AND
includingLeviathan · copperGrade: 0.66Grade Unit: %Intercept: 345.9 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 0.66
- Grade Unit
- %
- Intercept
- 345.9 m
- From
- 440.44 m
- To
- 786.38 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-786.38
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 0.66 % copper is strong against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 228.3 %·m is strong.
Positive factors
- 0.66 % copper is strong on the porphyry deposit band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“0.66”
Context: including
includingLeviathan · silverGrade: 3.2Grade Unit: g/tIntercept: 345.9 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 3.2
- Grade Unit
- g/t
- Intercept
- 345.9 m
- From
- 440.44 m
- To
- 786.38 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-786.38
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 3.2 g/t silver is moderate against the default band [500, 200, 100, 30] g/t. Grade×width 1106.9 g/t·m is moderate (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
“3.2”
Context: including
includingLeviathan · moGrade: 78Grade Unit: ppmIntercept: 345.9 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 78
- Grade Unit
- ppm
- Intercept
- 345.9 m
- From
- 440.44 m
- To
- 786.38 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-786.38
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table: 78 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
“78”
Context: including
includingLeviathan · copperGrade: 1.1Grade Unit: %Intercept: 126.5 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 1.1
- Grade Unit
- %
- Intercept
- 126.5 m
- From
- 440.44 m
- To
- 566.93 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-566.93
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 1.1 % copper is exceptional against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 139.2 %·m is moderate (grade alone is exceptional; the better of the two is used).
Positive factors
- 1.1 % copper is exceptional on the porphyry deposit band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“1.10”
Context: including
includingLeviathan · silverGrade: 7Grade Unit: g/tIntercept: 126.5 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 7
- Grade Unit
- g/t
- Intercept
- 126.5 m
- From
- 440.44 m
- To
- 566.93 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-566.93
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 7 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 885.5 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
“7.0”
Context: including
includingLeviathan · moGrade: 45Grade Unit: ppmIntercept: 126.5 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 45
- Grade Unit
- ppm
- Intercept
- 126.5 m
- From
- 440.44 m
- To
- 566.93 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-566.93
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table: 45 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
“45”
Context: including
includingLeviathan · copperGrade: 1.49Grade Unit: %Intercept: 80.8 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 1.49
- Grade Unit
- %
- Intercept
- 80.8 m
- From
- 440.44 m
- To
- 521.21 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-521.21
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 1.49 % copper is exceptional against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 120.4 %·m is moderate (grade alone is exceptional; the better of the two is used).
Positive factors
- 1.49 % copper is exceptional on the porphyry deposit band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“1.49”
Context: including
includingLeviathan · silverGrade: 8.9Grade Unit: g/tIntercept: 80.8 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 8.9
- Grade Unit
- g/t
- Intercept
- 80.8 m
- From
- 440.44 m
- To
- 521.21 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-521.21
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table. 8.9 g/t silver is weak against the default band [500, 200, 100, 30] g/t. Grade×width 719.1 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
“8.9”
Context: including
includingLeviathan · moGrade: 41Grade Unit: ppmIntercept: 80.8 mView all detailsHide details
Identity
- Hole ID
- including
- Project
- Leviathan
- Commodity
- mo
- Region
- usa_id
- Reported Region
- Idaho
- Ticker
- BIG
Geometry
- Grade
- 41
- Grade Unit
- ppm
- Intercept
- 80.8 m
- From
- 440.44 m
- To
- 521.21 m
Classification
- Deposit Type
- porphyry
- Sample Type
- drill
- Group ID
- including:440.44-521.21
- Mining Method
- open_pit
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-17T00:00:00.000Z
Reasoning: Expanded from assay table: 41 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
“41”
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.