Transatlantic Samples 36.1% Cu over 2.6 metres at Monitor Project - Big Elk Prospect
Original announcement by tmx on
- Company
- Transatlantic Mining Corp.
- Ticker
- TCO
- Exchange
- TSX
- Region
- Idaho, USA
- Primary commodity
- Copper
- Secondary commodities
- Gold, Silver
- Document categories
- Drill results, Other
- Extracted
- 2026-09-13 03:02:54 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Transatlantic Mining reported high-grade copper surface samples at the Big Elk prospect, including an outcrop assay of 36.1% Cu over 2.6m. While recent drilling confirmed the geometry of known structures and historical workings, it did not intersect new mineralized material.
Reasoning: High-grade surface intercepts provide significant prospectivity, though the recent drill program was focused on structural validation rather than new mineralized discovery.
Positive factors
- High-grade surface samples (36.1% Cu)
- QA/QC protocols and lab names disclosed
- QP sign-off provided
Negative factors
- Drilling did not intersect new vein material
- Drilling results are non-analytical (targeting voids/geometry)
Facts used in scoring: 9
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: 36.1% Cu is an exceptionally high-grade copper intercept.
Evidence · table
“36.1”
Context: 2.6
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release mentions analytical procedures adhered to industry-standard protocols and passed internal checks.
Evidence · text
“All analytical procedures adhered to industry-standard protocols, and results have passed internal QA/QC checks.”
Extracted facts
Stored fact records: 9. Some facts used in scoring do not have a stored record.
Drill Results (9)
Fact 1Monitor Project · copperGrade: 36.1Grade Unit: %Intercept: 2.6 mView all detailsHide details
Identity
- Project
- Monitor Project
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho, USA
- Ticker
- TCO
Geometry
- Grade
- 36.1
- Grade Unit
- %
- Intercept
- 2.6 m
- True Width
- 2.4 m
- From
- 0 m
- To
- 2.6 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- channel
- Group ID
- MON_231019_1:0-2.6
Location
- Location
- Big Elk
- Loc. Source
- document
QA/QC
- Laboratory
- American Analytical Laboratories
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: 36.1% Cu is an exceptional grade for a copper project.
Positive factors
- Exceptional copper grade
Evidence · table
“36.1”
Context: 2.6
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.4
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
Bonanza InterceptRejected · positive
Exceptionally high-grade zone, well above the deposit-type norm.
Reason: 36.1% Cu is an exceptionally high-grade copper intercept.
Evidence · table
“36.1”
Context: 2.6
QA/QC DisclosedRejected · positive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Reason: Release mentions analytical procedures adhered to industry-standard protocols and passed internal checks.
Evidence · text
“All analytical procedures adhered to industry-standard protocols, and results have passed internal QA/QC checks.”
Fact 2Monitor Project · goldGrade: 0.93Grade Unit: g/tIntercept: 2.6 mView all detailsHide details
Identity
- Project
- Monitor Project
- Commodity
- gold
- Region
- usa_id
- Reported Region
- Idaho, USA
- Ticker
- TCO
Geometry
- Grade
- 0.93
- Grade Unit
- g/t
- Intercept
- 2.6 m
- True Width
- 2.4 m
- From
- 0 m
- To
- 2.6 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- channel
- Group ID
- MON_231019_1:0-2.6
Location
- Location
- Big Elk
- Loc. Source
- document
QA/QC
- Laboratory
- American Analytical Laboratories
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Gold grade is present as a byproduct in a high-grade copper sample.
Evidence · table
“0.93”
Context: 2.6
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.4
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 3Monitor Project · silverGrade: 29.55Grade Unit: g/tIntercept: 2.6 mView all detailsHide details
Identity
- Project
- Monitor Project
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho, USA
- Ticker
- TCO
Geometry
- Grade
- 29.55
- Grade Unit
- g/t
- Intercept
- 2.6 m
- True Width
- 2.4 m
- From
- 0 m
- To
- 2.6 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- channel
- Group ID
- MON_231019_1:0-2.6
Location
- Location
- Big Elk
- Loc. Source
- document
QA/QC
- Laboratory
- American Analytical Laboratories
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Silver grade is present as a byproduct in a high-grade copper sample.
Evidence · table
“29.55”
Context: 2.6
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 2.4
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 4Monitor Project · copperGrade: 6.6Grade Unit: %View all detailsHide details
Identity
- Project
- Monitor Project
- Commodity
- copper
- Region
- usa_id
- Reported Region
- Idaho, USA
- Ticker
- TCO
Geometry
- Grade
- 6.6
- Grade Unit
- %
Classification
- Sample Type
- surface
Location
- Location
- Big Elk
- Loc. Source
- document
QA/QC
- Laboratory
- American Analytical Laboratories
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: 6.6% Cu is a strong grade for a surface sample, though selectivity is noted.
Positive factors
- Strong copper grade in gossan
Negative factors
- Surface grab sample selectivity
Evidence · table
“6.6”
Context: N/A
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 5Monitor Project · goldGrade: 0.14Grade Unit: g/tView all detailsHide details
Identity
- Project
- Monitor Project
- Commodity
- gold
- Region
- usa_id
- Reported Region
- Idaho, USA
- Ticker
- TCO
Geometry
- Grade
- 0.14
- Grade Unit
- g/t
Classification
- Sample Type
- surface
Location
- Location
- Big Elk
- Loc. Source
- document
QA/QC
- Laboratory
- American Analytical Laboratories
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Low gold grade in surface sample.
Evidence · table
“0.14”
Context: N/A
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 6Monitor Project · silverGrade: 5.1Grade Unit: g/tView all detailsHide details
Identity
- Project
- Monitor Project
- Commodity
- silver
- Region
- usa_id
- Reported Region
- Idaho, USA
- Ticker
- TCO
Geometry
- Grade
- 5.1
- Grade Unit
- g/t
Classification
- Sample Type
- surface
Location
- Location
- Big Elk
- Loc. Source
- document
QA/QC
- Laboratory
- American Analytical Laboratories
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Low silver grade in surface sample.
Evidence · table
“5.1”
Context: N/A
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
MON_231019_1Monitor · copperGrade: 36.1Grade Unit: %Intercept: 2.6 mView all detailsHide details
Identity
- Hole ID
- MON_231019_1
- Project
- Monitor
- Commodity
- copper
- Region
- usa_id
- Reported Region
- usa_id
- Ticker
- TCO
Geometry
- Grade
- 36.1
- Grade Unit
- %
- Intercept
- 2.6 m
- From
- 0 m
- To
- 2.6 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- drill
- Group ID
- MON_231019_1:0-2.6
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Expanded from assay table. 36.1 % copper is exceptional against the default band [2.5, 1, 0.5, 0.25] %. Grade×width 93.9 %·m is moderate (grade alone is exceptional; the better of the two is used).
Positive factors
- 36.1 % copper is exceptional on the default band.
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“36.1”
Context: MON_231019_1
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
MON_231019_1Monitor · goldGrade: 0.93Grade Unit: g/tIntercept: 2.6 mView all detailsHide details
Identity
- Hole ID
- MON_231019_1
- Project
- Monitor
- Commodity
- gold
- Region
- usa_id
- Reported Region
- usa_id
- Ticker
- TCO
Geometry
- Grade
- 0.93
- Grade Unit
- g/t
- Intercept
- 2.6 m
- From
- 0 m
- To
- 2.6 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- drill
- Group ID
- MON_231019_1:0-2.6
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Expanded from assay table. 0.93 g/t gold is weak against the default band [5, 2, 1, 0.3] g/t. Grade×width 2.4 g/t·m is below (grade alone is weak; the better of the two is used).
Negative factors
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“0.93”
Context: MON_231019_1
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
MON_231019_1Monitor · silverGrade: 29.55Grade Unit: g/tIntercept: 2.6 mView all detailsHide details
Identity
- Hole ID
- MON_231019_1
- Project
- Monitor
- Commodity
- silver
- Region
- usa_id
- Reported Region
- usa_id
- Ticker
- TCO
Geometry
- Grade
- 29.55
- Grade Unit
- g/t
- Intercept
- 2.6 m
- From
- 0 m
- To
- 2.6 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- drill
- Group ID
- MON_231019_1:0-2.6
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-07-14T00:00:00.000Z
Reasoning: Expanded from assay table. 29.55 g/t silver is below against the default band [500, 200, 100, 30] g/t. Grade×width 76.8 g/t·m is below.
Negative factors
- 29.55 g/t silver is below the weak threshold (30 g/t) on the default band.
- Scored from rubric bands during table expansion, not from document context.
Evidence · table
“29.55”
Context: MON_231019_1
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.