Corvus Gold Makes New NW Sierra Blanca Zone Discovery 700 Metres West of YellowJacket Deposit, North Bullfrog Project, NV
Original announcement by tmx on
- Company
- Corvus Gold Inc.
- Ticker
- KOR
- Exchange
- TSX
- Region
- Nevada
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Drill results, Other
- Extracted
- 2026-08-23 20:20:43 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Corvus Gold has announced a new discovery at the North Bullfrog Project in Nevada, identifying the NW Sierra Blanca Zone approximately 700 metres west of the YellowJacket deposit. The zone contains gold and silver mineralization hosted within a major north-south structural zone and is currently being tested with follow-up step-out drilling.
Reasoning: The announcement reports a new discovery (NW Sierra Blanca Zone) located 700m west of the existing YellowJacket deposit, representing significant expansion potential. While grades are moderate, the discovery of a new structural zone outside the current resource is highly material.
Positive factors
- Step-Out Extension
- New discovery zone
- Adjacent to existing resource
Negative factors
- Apparent Width Only
Facts used in scoring: 24
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The mineralization is described as a new zone 700m west of the existing YellowJacket deposit.
Evidence · text
“700 metres west of the YellowJacket deposit”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release details specific QA/QC protocols including blind certified standards, blanks, and replicate samples.
Evidence · text
“Quality control is monitored by the insertion of blind certified standard reference materials and blanks”
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 reported drill intercepts are not true widths and there is insufficient data to calculate true orientation.
Evidence · text
“Reported drill intercepts are not true widths.”
Extracted facts
Stored fact records: 24. Some facts used in scoring do not have a stored record.
Drill Results (24)
NB-15-268North Bullfrog Project · goldGrade: 0.27Grade Unit: g/tIntercept: 9.15 mView all detailsHide details
Identity
- Hole ID
- NB-15-268
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.27
- Grade Unit
- g/t
- Intercept
- 9.15 m
- From
- 39.62 m
- To
- 48.77 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- NB-15-268:39.62-48.77
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.27”
Context: 9.15
NB-15-268North Bullfrog Project · silverGrade: 0.45Grade Unit: g/tIntercept: 9.15 mView all detailsHide details
Identity
- Hole ID
- NB-15-268
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.45
- Grade Unit
- g/t
- Intercept
- 9.15 m
- From
- 39.62 m
- To
- 48.77 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- NB-15-268:39.62-48.77
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.45”
Context: 9.15
AZ 090 dip -50North Bullfrog Project · goldGrade: 0.45Grade Unit: g/tIntercept: 42.67 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -50
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.45
- Grade Unit
- g/t
- Intercept
- 42.67 m
- From
- 53.34 m
- To
- 96.01 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -50:53.34-96.01
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Broad intercept with moderate grade.
Evidence · table
“0.45”
Context: 42.67
AZ 090 dip -50North Bullfrog Project · silverGrade: 0.61Grade Unit: g/tIntercept: 42.67 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -50
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.61
- Grade Unit
- g/t
- Intercept
- 42.67 m
- From
- 53.34 m
- To
- 96.01 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -50:53.34-96.01
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Broad intercept with moderate grade.
Evidence · table
“0.61”
Context: 42.67
AZ 090 dip -50North Bullfrog Project · goldGrade: 1.15Grade Unit: g/tIntercept: 1.52 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -50
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.15
- Grade Unit
- g/t
- Intercept
- 1.52 m
- From
- 86.87 m
- To
- 88.39 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -50:86.87-88.39
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Higher grade sub-interval.
Evidence · table
“1.15”
Context: 1.52
AZ 090 dip -50North Bullfrog Project · silverGrade: 1.51Grade Unit: g/tIntercept: 1.52 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -50
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.51
- Grade Unit
- g/t
- Intercept
- 1.52 m
- From
- 86.87 m
- To
- 88.39 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -50:86.87-88.39
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Higher grade sub-interval.
Evidence · table
“1.51”
Context: 1.52
AZ 090 dip -50North Bullfrog Project · goldGrade: 0.21Grade Unit: g/tIntercept: 4.58 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -50
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.21
- Grade Unit
- g/t
- Intercept
- 4.58 m
- From
- 108.2 m
- To
- 112.78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -50:108.2-112.78
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.21”
Context: 4.58
AZ 090 dip -50North Bullfrog Project · silverGrade: 0.04Grade Unit: g/tIntercept: 4.58 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -50
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.04
- Grade Unit
- g/t
- Intercept
- 4.58 m
- From
- 108.2 m
- To
- 112.78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -50:108.2-112.78
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.04”
Context: 4.58
NB-15-269North Bullfrog Project · goldGrade: 0.64Grade Unit: g/tIntercept: 6.09 mView all detailsHide details
Identity
- Hole ID
- NB-15-269
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.64
- Grade Unit
- g/t
- Intercept
- 6.09 m
- From
- 13.72 m
- To
- 19.81 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- NB-15-269:13.72-19.81
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Moderate grade intercept.
Evidence · table
“0.64”
Context: 6.09
NB-15-269North Bullfrog Project · silverGrade: 0.77Grade Unit: g/tIntercept: 6.09 mView all detailsHide details
Identity
- Hole ID
- NB-15-269
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.77
- Grade Unit
- g/t
- Intercept
- 6.09 m
- From
- 13.72 m
- To
- 19.81 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- NB-15-269:13.72-19.81
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Moderate grade intercept.
Evidence · table
“0.77”
Context: 6.09
AZ 090 dip -55North Bullfrog Project · goldGrade: 0.37Grade Unit: g/tIntercept: 7.62 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -55
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.37
- Grade Unit
- g/t
- Intercept
- 7.62 m
- From
- 54.86 m
- To
- 62.48 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -55:54.86-62.48
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.37”
Context: 7.62
AZ 090 dip -55North Bullfrog Project · silverGrade: 1.1Grade Unit: g/tIntercept: 7.62 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -55
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.1
- Grade Unit
- g/t
- Intercept
- 7.62 m
- From
- 54.86 m
- To
- 62.48 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -55:54.86-62.48
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Moderate silver grade.
Evidence · table
“1.1”
Context: 7.62
AZ 090 dip -55North Bullfrog Project · goldGrade: 1.28Grade Unit: g/tIntercept: 19.82 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -55
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.28
- Grade Unit
- g/t
- Intercept
- 19.82 m
- From
- 92.96 m
- To
- 112.78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -55:92.96-112.78
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Strong intercept for the zone.
Evidence · table
“1.28”
Context: 19.82
AZ 090 dip -55North Bullfrog Project · silverGrade: 1.8Grade Unit: g/tIntercept: 19.82 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -55
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.8
- Grade Unit
- g/t
- Intercept
- 19.82 m
- From
- 92.96 m
- To
- 112.78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -55:92.96-112.78
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Strong intercept for the zone.
Evidence · table
“1.8”
Context: 19.82
AZ 090 dip -55North Bullfrog Project · goldGrade: 0.23Grade Unit: g/tIntercept: 4.57 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -55
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.23
- Grade Unit
- g/t
- Intercept
- 4.57 m
- From
- 167.64 m
- To
- 172.21 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -55:167.64-172.21
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.23”
Context: 4.57
AZ 090 dip -55North Bullfrog Project · silverGrade: 0.5Grade Unit: g/tIntercept: 4.57 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -55
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.5
- Grade Unit
- g/t
- Intercept
- 4.57 m
- From
- 167.64 m
- To
- 172.21 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -55:167.64-172.21
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.5”
Context: 4.57
NB-15-270North Bullfrog Project · goldGrade: 0.35Grade Unit: g/tIntercept: 9.14 mView all detailsHide details
Identity
- Hole ID
- NB-15-270
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.35
- Grade Unit
- g/t
- Intercept
- 9.14 m
- From
- 45.72 m
- To
- 54.86 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- NB-15-270:45.72-54.86
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.35”
Context: 9.14
NB-15-270North Bullfrog Project · silverGrade: 0.58Grade Unit: g/tIntercept: 9.14 mView all detailsHide details
Identity
- Hole ID
- NB-15-270
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.58
- Grade Unit
- g/t
- Intercept
- 9.14 m
- From
- 45.72 m
- To
- 54.86 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- NB-15-270:45.72-54.86
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Low grade intercept.
Evidence · table
“0.58”
Context: 9.14
AZ 090 dip -60North Bullfrog Project · goldGrade: 0.43Grade Unit: g/tIntercept: 27.43 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -60
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.43
- Grade Unit
- g/t
- Intercept
- 27.43 m
- From
- 82.3 m
- To
- 109.73 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -60:82.3-109.73
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Broad intercept with moderate grade.
Evidence · table
“0.43”
Context: 27.43
AZ 090 dip -60North Bullfrog Project · silverGrade: 1.47Grade Unit: g/tIntercept: 27.43 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -60
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.47
- Grade Unit
- g/t
- Intercept
- 27.43 m
- From
- 82.3 m
- To
- 109.73 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -60:82.3-109.73
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Broad intercept with moderate silver grade.
Evidence · table
“1.47”
Context: 27.43
AZ 090 dip -60North Bullfrog Project · goldGrade: 1.05Grade Unit: g/tIntercept: 1.52 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -60
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.05
- Grade Unit
- g/t
- Intercept
- 1.52 m
- From
- 85.34 m
- To
- 86.86 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -60:85.34-86.86
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Higher grade sub-interval.
Evidence · table
“1.05”
Context: 1.52
AZ 090 dip -60North Bullfrog Project · silverGrade: 1.02Grade Unit: g/tIntercept: 1.52 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -60
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 1.02
- Grade Unit
- g/t
- Intercept
- 1.52 m
- From
- 85.34 m
- To
- 86.86 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -60:85.34-86.86
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Higher grade sub-interval.
Evidence · table
“1.02”
Context: 1.52
AZ 090 dip -60North Bullfrog Project · goldGrade: 0.29Grade Unit: g/tIntercept: 25.91 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -60
- Project
- North Bullfrog Project
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.29
- Grade Unit
- g/t
- Intercept
- 25.91 m
- From
- 118.87 m
- To
- 144.78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -60:118.87-144.78
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Broad intercept with low grade.
Evidence · table
“0.29”
Context: 25.91
AZ 090 dip -60North Bullfrog Project · silverGrade: 0.59Grade Unit: g/tIntercept: 25.91 mView all detailsHide details
Identity
- Hole ID
- AZ 090 dip -60
- Project
- North Bullfrog Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- KOR
Geometry
- Grade
- 0.59
- Grade Unit
- g/t
- Intercept
- 25.91 m
- From
- 118.87 m
- To
- 144.78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- AZ 090 dip -60:118.87-144.78
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2015-11-03T00:00:00.000Z
Reasoning: Broad intercept with low grade.
Evidence · table
“0.59”
Context: 25.91
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.