GoldMining releases initial drill results from Yarumalito project in Colombia

Original announcement by miningtechnology on

Company
GoldMining
Ticker
Unavailable
Exchange
Unavailable
Region
Antioquia, Colombia
Primary commodity
Gold
Secondary commodities
Copper, Silver
Document categories
Drill results
Extracted
2026-10-07 10:03:40 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

GoldMining has released initial drill results from its Yarumalito gold-copper porphyry project in Colombia. Hole YAR-45 intersected nearly 400m of continuous mineralisation from surface, including significant gold-equivalent intervals.

Reasoning: The hole YAR-45 returned a very wide (nearly 400m) continuous gold-copper mineralised intercept starting from surface, which validates the geological model for this porphyry system.

Positive factors

  • significant intercept width
  • mineralisation from surface
  • confirms porphyry-style structure
  • open along strike and depth

Facts used in scoring: 7

Classification and evidence

Step-Out Extensionpositive

Mineralization extended beyond the previously known limit.

Why it applies: The results confirm the presence and structure of porphyry-style mineralisation within the project's core, validating the 3D model.

Evidence · text

“confirming the presence and structure of porphyry-style mineralisation within the project’s core P-1 host unit”

Extracted facts

Stored fact records: 7. Some facts used in scoring do not have a stored record.

Drill Results (7)

YAR-45Yarumalito · goldGrade: 0.34Grade Unit: g/tIntercept: 399.9 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
gold
Region
colombia
Reported Region
colombia

Geometry

Grade
0.34
Grade Unit
g/t
Intercept
399.9 m
From
0 m
To
399.9 m
Intercept Depth
0 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:0-399.9
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Metal Equivalent

Metal Eq. Grade
0.45
Metal Eq. Unit
g/t gold equivalent
Assumptions Disclosed
No

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: Wide intercept of 399.9m starting from surface is highly significant for a porphyry target.

Positive factors

  • large width
  • from surface

Evidence · text

“It returned 399.9m grading 0.45 grams per tonne (g/t) gold equivalent, incorporating 0.34g/t gold, 0.09% copper and 1.21g/t silver from surface to 399.9m in depth.”

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

Metal Equivalent Opaquenegative

Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used.

Why it applies: an equivalent grade is reported without its assumptions

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

YAR-45Yarumalito · copperGrade: 0.09Grade Unit: %Intercept: 399.9 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
copper
Region
colombia
Reported Region
colombia

Geometry

Grade
0.09
Grade Unit
%
Intercept
399.9 m
From
0 m
To
399.9 m
Intercept Depth
0 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:0-399.9
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: Copper component of the wide gold-equivalent intercept.

Evidence · text

“0.09% copper”

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

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

YAR-45Yarumalito · silverGrade: 1.21Grade Unit: g/tIntercept: 399.9 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
silver
Region
colombia
Reported Region
colombia

Geometry

Grade
1.21
Grade Unit
g/t
Intercept
399.9 m
From
0 m
To
399.9 m
Intercept Depth
0 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:0-399.9
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: Silver component of the wide gold-equivalent intercept.

Evidence · text

“1.21g/t silver”

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

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

YAR-45Yarumalito · goldGrade: 0.81Grade Unit: g/tIntercept: 33.2 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
gold
Region
colombia
Reported Region
colombia

Geometry

Grade
0.81
Grade Unit
g/t
Intercept
33.2 m
From
10.3 m
To
43.5 m
Intercept Depth
10.3 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:10.3-43.5
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Metal Equivalent

Metal Eq. Grade
0.81
Metal Eq. Unit
g/t gold equivalent
Assumptions Disclosed
No

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: High-grade sub-interval within the main intercept.

Evidence · text

“33.2m at 0.81g/t gold equivalent beginning at 10.3m”

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

Metal Equivalent Opaquenegative

Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used.

Why it applies: an equivalent grade is reported without its assumptions

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

YAR-45Yarumalito · goldGrade: 0.61Grade Unit: g/tIntercept: 74.7 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
gold
Region
colombia
Reported Region
colombia

Geometry

Grade
0.61
Grade Unit
g/t
Intercept
74.7 m
From
136.5 m
To
211.2 m
Intercept Depth
136.5 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:136.5-211.2
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Metal Equivalent

Metal Eq. Grade
0.61
Metal Eq. Unit
g/t gold equivalent
Assumptions Disclosed
No

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: Significant width (74.7m) at 0.61 g/t AuEq.

Evidence · text

“74.7m zone at 0.61g/t gold equivalent from 136.5m”

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

Metal Equivalent Opaquenegative

Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used.

Why it applies: an equivalent grade is reported without its assumptions

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

YAR-45Yarumalito · goldGrade: 0.7Grade Unit: g/tIntercept: 47 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
gold
Region
colombia
Reported Region
colombia

Geometry

Grade
0.7
Grade Unit
g/t
Intercept
47 m
From
136.5 m
To
183.5 m
Intercept Depth
136.5 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:136.5-183.5
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: High-grade sub-interval within the 74.7m zone.

Evidence · text

“which itself included 47m at 0.7g/t”

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

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

YAR-45Yarumalito · goldGrade: 0.65Grade Unit: g/tIntercept: 36 mView all details
Link to this fact

Identity

Hole ID
YAR-45
Project
Yarumalito
Commodity
gold
Region
colombia
Reported Region
colombia

Geometry

Grade
0.65
Grade Unit
g/t
Intercept
36 m
From
330 m
To
366 m
Intercept Depth
330 m

Classification

Deposit Type
porphyry
Program
exploration
Sample Type
drill
Group ID
YAR-45:330-366
Mining Method
open_pit

QA/QC

QA/QC Methods
standards

Metal Equivalent

Metal Eq. Grade
0.65
Metal Eq. Unit
g/t gold equivalent
Assumptions Disclosed
No

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-10-07T00:00:00.000Z

Reasoning: Additional mineralised interval encountered at depth.

Evidence · text

“interval of 36m at 0.65g/t was encountered from 330m”

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

Metal Equivalent Opaquenegative

Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used.

Why it applies: an equivalent grade is reported without its assumptions

Nearology Playneutral

Value premise rests on proximity to a known deposit rather than own results.

Why it applies: proximity is offered as the value premise: "The company reported that hole YAR-45 yielded nearly 400m of uninterrupted gold-copper mineralisation beginning at surfa"

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.