Andina Copper Intersects 206m at 0.67% Cu from 32m within 400m at 0.46% Cu

Original announcement by tmx on

Company
Andina Copper Corporation
Ticker
ANDC
Exchange
TSX
Region
Chocó, Colombia
Primary commodity
Copper
Secondary commodities
Molybdenum, Silver
Document categories
Drill results
Extracted
2026-09-15 10:24:39 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Andina Copper reported significant near-surface drill results from its Cobrasco porphyry copper-molybdenum project in Colombia. Hole CDH011 intersected a 400m wide interval at 0.46% Cu, including a high-grade 206m zone at 0.67% Cu.

Reasoning: CDH011 returned a very wide (400m) and high-grade (0.67% Cu) intercept in a porphyry system, confirming continuity at depth.

Positive factors

  • significant near-surface copper-molybdenum intercepts
  • confirms vertical continuity of mineralization
  • high-grade sub-intervals reported
  • large-scale porphyry discovery context

Negative factors

  • reported widths are downhole lengths

Facts used in scoring: 14

Classification and evidence

Step-Out Extensionpositive

Mineralization extended beyond the previously known limit.

Why it applies: The company is using substantial step-outs to test the extent of the Cobrasco system.

Evidence · text

“using substantial step-outs to test the overall extent”

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 accredited ALS laboratories and sample handling.

Evidence · text

“ALS sample preparation facility in Medellin, an accredited 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 release explicitly states that reported interval widths are downhole lengths and may not represent true widths.

Evidence · text

“Reported interval widths are downhole lengths and may not represent the true widths”

Extracted facts

Stored fact records: 14. Some facts used in scoring do not have a stored record.

Drill Results (14)

CDH011Cobrasco · copperGrade: 0.46Grade Unit: %Intercept: 400 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
0.46
Grade Unit
%
Intercept
400 m
From
32 m
To
432 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-432
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Wide 400m intercept at 0.46% Cu is significant for a porphyry system.

Positive factors

  • broad mineralized envelope

Evidence · text

“400m @ 0.46% Cu”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · molybdenumGrade: 60Grade Unit: ppmIntercept: 400 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
molybdenum
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
60
Grade Unit
ppm
Intercept
400 m
From
32 m
To
432 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-432
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Mo is present as a significant byproduct in the main intercept.

Positive factors

  • presence of molybdenum in copper interval

Evidence · text

“400m @ 0.46% Cu, 60ppm Mo”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · silverGrade: 1.1Grade Unit: g/tIntercept: 400 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
silver
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
1.1
Grade Unit
g/t
Intercept
400 m
From
32 m
To
432 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-432
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Trace silver reported in the broad interval.

Evidence · text

“1.1g/t Ag”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · copperGrade: 0.67Grade Unit: %Intercept: 206 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
0.67
Grade Unit
%
Intercept
206 m
From
32 m
To
238 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-238
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: 206m @ 0.67% Cu is a very strong intercept for a porphyry system.

Positive factors

  • high-grade near-surface interval

Evidence · text

“206m @ 0.67% Cu”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · molybdenumGrade: 35Grade Unit: ppmIntercept: 206 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
molybdenum
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
35
Grade Unit
ppm
Intercept
206 m
From
32 m
To
238 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-238
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Mo is present in the high-grade Cu interval.

Positive factors

  • Mo enrichment in high-grade Cu zone

Evidence · text

“35ppm Mo from 32m”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · copperGrade: 0.87Grade Unit: %Intercept: 40 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
0.87
Grade Unit
%
Intercept
40 m
From
32 m
To
72 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-72
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Strong sub-interval within the main high-grade zone.

Positive factors

  • high-grade sub-interval

Evidence · text

“40m @ 0.87% Cu”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · molybdenumGrade: 70Grade Unit: ppmIntercept: 40 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
molybdenum
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
70
Grade Unit
ppm
Intercept
40 m
From
32 m
To
72 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:32-72
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Mo grade is elevated in this sub-interval.

Positive factors

  • high Mo grade in sub-interval

Evidence · text

“70ppm Mo from 32m”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · copperGrade: 0.76Grade Unit: %Intercept: 54 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
0.76
Grade Unit
%
Intercept
54 m
From
184 m
To
238 m
Intercept Depth
184 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:184-238
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Another strong sub-interval within the upper zone.

Positive factors

  • significant sub-interval

Evidence · text

“54m @ 0.76% Cu”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · molybdenumGrade: 59Grade Unit: ppmIntercept: 54 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
molybdenum
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
59
Grade Unit
ppm
Intercept
54 m
From
184 m
To
238 m
Intercept Depth
184 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:184-238
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Mo grade is elevated in this sub-interval.

Positive factors

  • Mo enrichment

Evidence · text

“59ppm Mo from 184m”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · copperGrade: 0.25Grade Unit: %Intercept: 290 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
0.25
Grade Unit
%
Intercept
290 m
From
302 m
To
592 m
Intercept Depth
302 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:302-592
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Moderate-grade interval extending the system vertically.

Positive factors

  • extends mineralization to depth

Evidence · text

“290m @ 0.25% Cu”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · molybdenumGrade: 93Grade Unit: ppmIntercept: 290 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
molybdenum
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
93
Grade Unit
ppm
Intercept
290 m
From
302 m
To
592 m
Intercept Depth
302 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
CDH011:302-592
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Confidence
medium
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Cutoff Grade
0.2
Cutoff Unit
% Cu
Dilution Disclosed
Yes
Max Dilution
20 m

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Mo grade is elevated in the deeper interval.

Positive factors

  • Mo enrichment at depth

Evidence · text

“93ppm Mo from 302m”

Tags used in scoring

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: qaqc_disclosed is not true

Compositing Transparentpositive

Cut-off grade and internal dilution rules are clearly stated for reported intervals.

Why it applies: cutoff_grade and internal dilution are both stated

CDH011Cobrasco · copperGrade: 1.17Grade Unit: %Intercept: 22 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
1.17
Grade Unit
%
Intercept
22 m
From
34 m
To
56 m
Intercept Depth
34 m

Classification

Deposit Type
porphyry
Sample Type
drill
Group ID
CDH011:34-56
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Dilution Disclosed
Yes

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Expanded from assay table. 1.17 % copper is exceptional against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 25.7 %·m is weak (grade alone is exceptional; the better of the two is used).

Positive factors

  • 1.17 % copper is exceptional on the porphyry deposit band.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“1.17”

Context: CDH011

Tags used in scoring

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: qaqc_disclosed is not 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

CDH011Cobrasco · copperGrade: 0.76Grade Unit: %Intercept: 54 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
copper
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
0.76
Grade Unit
%
Intercept
54 m
From
32 m
To
86 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Sample Type
drill
Group ID
CDH011:32-86
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Dilution Disclosed
Yes

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Expanded from assay table. 0.76 % copper is strong against the porphyry deposit band [0.8, 0.4, 0.25, 0.15] %. Grade×width 41.0 %·m is weak (grade alone is strong; the better of the two is used).

Positive factors

  • 0.76 % copper is strong on the porphyry deposit band.

Negative factors

  • Scored from rubric bands during table expansion, not from document context.

Evidence · table

“0.76”

Context: CDH011

Tags used in scoring

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: qaqc_disclosed is not 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

CDH011Cobrasco · molybdenumGrade: 59Grade Unit: ppmIntercept: 54 mView all details
Link to this fact

Identity

Hole ID
CDH011
Project
Cobrasco
Commodity
molybdenum
Region
colombia
Reported Region
colombia
Ticker
ANDC

Geometry

Grade
59
Grade Unit
ppm
Intercept
54 m
From
32 m
To
86 m
Intercept Depth
32 m

Classification

Deposit Type
porphyry
Sample Type
drill
Group ID
CDH011:32-86
Mining Method
open_pit

Location

Location
Upper Zone
Loc. Source
document

QA/QC

Laboratory
ALS
Lab Certified
Yes
QP Signed
Yes
QA/QC Methods
standards

Compositing

Dilution Disclosed
Yes

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-25T00:00:00.000Z

Reasoning: Expanded from assay table: 59 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder.

Negative factors

  • No grade rubric for molybdenum; intercept not scored.

Evidence · table

“59”

Context: CDH011

Tags used in scoring

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: qaqc_disclosed is not 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.