Orosur Mining Inc Announces Extension of Pepas West

Original announcement by tmx on

Company
Orosur Mining Inc
Ticker
OMI
Exchange
TSX
Region
Colombia
Primary commodity
Gold
Secondary commodities
None reported
Document categories
Drill results
Extracted
2026-09-18 14:37:35 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Orosur Mining Inc. announced new drill results from six holes at its Pepas West prospect in Colombia, extending shallow, high-grade gold mineralization. Key intercepts include 10.2m at 5.77 g/t Au from surface, including 2.45m at 22.3 g/t Au. The company plans to test different drilling techniques to accelerate definition of this extensive, flat-lying, surficial oxide gold zone, which is considered a high priority for near-term production due to its free-digging potential.

Reasoning: The document reports high-grade, shallow gold drill intercepts from the Pepas West prospect, extending mineralization and highlighting potential for low-cost, free-digging ounces. While geological complexity and unknown true widths introduce some uncertainty, the overall results are positive, supported by disclosed QA/QC.

Positive factors

  • High-grade gold intercepts, including 22.3 g/t Au over 2.45m, indicating bonanza grades.
  • Shallow, near-surface mineralization (from surface) suggests potential for low-cost, free-digging mining.
  • Extension of mineralization 100m west of the main Pepas deposit, demonstrating exploration success.
  • Comprehensive QA/QC procedures disclosed, including certified labs and QP sign-off.
  • Clear reporting of cut-off grade for intersections.

Negative factors

  • True thickness of intercepts is unknown, which may overstate actual widths.
  • Geological complexity noted, with potential for remobilized and weathered material, which could impact continuity and processing.
  • Deeper zones remain unresolved, limiting understanding of the full extent of mineralization.

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 11

Extracted facts

Stored fact records: 11. Some facts used in scoring do not have a stored record.

Drill Results (11)

PEP100Anzá · goldGrade: 0.65Grade Unit: g/tIntercept: 6 mView all details
Link to this fact

Identity

Hole ID
PEP100
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
0.65
Grade Unit
g/t
Intercept
6 m
From
18.15 m
To
24.15 m
Intercept Depth
18.15 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP100:18.15-24.15
Mining Method
open_pit

Location

Location
Pepas West
Easting
403210
Northing
704940
CRS
WGS84, UTM Zone 18
Elevation
965 m
Azimuth
82 °
Dip
-45 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This intercept shows moderate grade and weak GT product, but contributes to the extension of mineralization in a new zone with disclosed QA/QC, though true width is unknown.

Positive factors

  • Intercept from a new zone of mineralization, indicating exploration success.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • Grade of 0.65 g/t Au is moderate for an epithermal open pit gold deposit.
  • GT product of 3.9 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“0.65”

Context: 6

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

PEP101Anzá · goldGrade: 2.81Grade Unit: g/tIntercept: 6.4 mView all details
Link to this fact

Identity

Hole ID
PEP101
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
2.81
Grade Unit
g/t
Intercept
6.4 m
From
0 m
To
6.4 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP101:0-6.4
Mining Method
open_pit

Location

Location
Pepas West
Easting
403274
Northing
704916
CRS
WGS84, UTM Zone 18
Elevation
973 m
Azimuth
35 °
Dip
-55 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This intercept shows a strong gold grade from surface, contributing to the extension of mineralization, though the GT product is weak and true width is unknown.

Positive factors

  • Strong gold grade of 2.81 g/t Au for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • GT product of 17.984 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“2.81”

Context: 6.4

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

PEP101Anzá · goldGrade: 3.83Grade Unit: g/tIntercept: 4.3 mView all details
Link to this fact

Identity

Hole ID
PEP101
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
3.83
Grade Unit
g/t
Intercept
4.3 m
From
1 m
To
5.3 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP101:1-5.3
Mining Method
open_pit

Location

Location
Pepas West
Easting
403274
Northing
704916
CRS
WGS84, UTM Zone 18
Elevation
973 m
Azimuth
35 °
Dip
-55 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This sub-interval shows a strong gold grade near surface, contributing to the overall positive results, though the GT product is weak and true width is unknown.

Positive factors

  • Strong gold grade of 3.83 g/t Au for an epithermal open pit deposit.
  • Intercept starts near surface, indicating potential for low-cost mining.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • GT product of 16.469 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“3.83”

Context: 4.3

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

PEP102Anzá · goldGrade: 2.18Grade Unit: g/tIntercept: 6.85 mView all details
Link to this fact

Identity

Hole ID
PEP102
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
2.18
Grade Unit
g/t
Intercept
6.85 m
From
0 m
To
6.85 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP102:0-6.85
Mining Method
open_pit

Location

Location
Pepas West
Easting
403343
Northing
704863
CRS
WGS84, UTM Zone 18
Elevation
985 m
Azimuth
188 °
Dip
-60 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This intercept shows a strong gold grade from surface, contributing to the extension of mineralization, though the GT product is weak and true width is unknown.

Positive factors

  • Strong gold grade of 2.18 g/t Au for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • GT product of 14.933 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“2.18”

Context: 6.85

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

PEP102Anzá · goldGrade: 3.24Grade Unit: g/tIntercept: 4.25 mView all details
Link to this fact

Identity

Hole ID
PEP102
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
3.24
Grade Unit
g/t
Intercept
4.25 m
From
0.9 m
To
5.15 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP102:0.9-5.15
Mining Method
open_pit

Location

Location
Pepas West
Easting
403343
Northing
704863
CRS
WGS84, UTM Zone 18
Elevation
985 m
Azimuth
188 °
Dip
-60 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This sub-interval shows an exceptional gold grade near surface, contributing significantly to the overall positive results, though the GT product is weak and true width is unknown.

Positive factors

  • Exceptional gold grade of 3.24 g/t Au for an epithermal open pit deposit.
  • Intercept starts near surface, indicating potential for low-cost mining.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • GT product of 13.77 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“3.24”

Context: 4.25

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

PEP103Anzá · goldGrade: 5.77Grade Unit: g/tIntercept: 10.2 mView all details
Link to this fact

Identity

Hole ID
PEP103
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
5.77
Grade Unit
g/t
Intercept
10.2 m
From
0 m
To
10.2 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP103:0-10.2
Mining Method
open_pit

Location

Location
Pepas West
Easting
403343
Northing
704863
CRS
WGS84, UTM Zone 18
Elevation
985 m
Azimuth
8 °
Dip
-50 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This intercept shows exceptional gold grade over a good width from surface, representing a strong result for the project, though true width is unknown.

Positive factors

  • Exceptional gold grade of 5.77 g/t Au over a significant width for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • Moderate GT product of 58.854 g/t*m.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“5.77”

Context: 10.20

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

PEP103Anzá · goldGrade: 22.3Grade Unit: g/tIntercept: 2.45 mView all details
Link to this fact

Identity

Hole ID
PEP103
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
22.3
Grade Unit
g/t
Intercept
2.45 m
From
0 m
To
2.45 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP103:0-2.45
Mining Method
open_pit

Location

Location
Pepas West
Easting
403343
Northing
704863
CRS
WGS84, UTM Zone 18
Elevation
985 m
Azimuth
8 °
Dip
-50 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This sub-interval represents a bonanza gold grade from surface, significantly enhancing the overall positive results for the project, though true width is unknown.

Positive factors

  • Bonanza gold grade of 22.3 g/t Au for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • Moderate GT product of 54.635 g/t*m.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“22.3”

Context: 2.45

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

PEP104Anzá · goldGrade: 1.77Grade Unit: g/tIntercept: 19.8 mView all details
Link to this fact

Identity

Hole ID
PEP104
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
1.77
Grade Unit
g/t
Intercept
19.8 m
From
0 m
To
19.8 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP104:0-19.8
Mining Method
open_pit

Location

Location
Pepas West
Easting
403347
Northing
704897
CRS
WGS84, UTM Zone 18
Elevation
998 m
Azimuth
220 °
Dip
-50 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This intercept shows a moderate gold grade over a significant width from surface, contributing to the overall positive results, though true width is unknown.

Positive factors

  • Moderate gold grade of 1.77 g/t Au over a significant width for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • Moderate GT product of 35.046 g/t*m.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“1.77”

Context: 19.8

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

PEP104Anzá · goldGrade: 2.71Grade Unit: g/tIntercept: 9.85 mView all details
Link to this fact

Identity

Hole ID
PEP104
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
2.71
Grade Unit
g/t
Intercept
9.85 m
From
9 m
To
18.85 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP104:9-18.85
Mining Method
open_pit

Location

Location
Pepas West
Easting
403347
Northing
704897
CRS
WGS84, UTM Zone 18
Elevation
998 m
Azimuth
220 °
Dip
-50 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This sub-interval shows a strong gold grade, contributing to the overall positive results, though the GT product is weak and true width is unknown.

Positive factors

  • Strong gold grade of 2.71 g/t Au for an epithermal open pit deposit.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • GT product of 26.6835 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“2.71”

Context: 9.85

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

PEP105Anzá · goldGrade: 2.03Grade Unit: g/tIntercept: 15 mView all details
Link to this fact

Identity

Hole ID
PEP105
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
2.03
Grade Unit
g/t
Intercept
15 m
From
0 m
To
15 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP105:0-15
Mining Method
open_pit

Location

Location
Pepas West
Easting
403347
Northing
704897
CRS
WGS84, UTM Zone 18
Elevation
998 m
Azimuth
40 °
Dip
-75 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This intercept shows a strong gold grade over a significant width from surface, contributing to the overall positive results, though true width is unknown.

Positive factors

  • Strong gold grade of 2.03 g/t Au over a significant width for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • Moderate GT product of 30.45 g/t*m.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“2.03”

Context: 15

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

PEP105Anzá · goldGrade: 3.24Grade Unit: g/tIntercept: 5.5 mView all details
Link to this fact

Identity

Hole ID
PEP105
Project
Anzá
Commodity
gold
Region
colombia
Reported Region
colombia
Ticker
OMI

Geometry

Grade
3.24
Grade Unit
g/t
Intercept
5.5 m
From
0 m
To
5.5 m
Intercept Depth
0 m

Classification

Deposit Type
epithermal
Program
exploration
Sample Type
drill
Group ID
PEP105:0-5.5
Mining Method
open_pit

Location

Location
Pepas West
Easting
403347
Northing
704897
CRS
WGS84, UTM Zone 18
Elevation
998 m
Azimuth
40 °
Dip
-75 °
Loc. Source
document

QA/QC

Laboratory
ALS Colombia Ltd and Actlabs
QA/QC Disclosed
Yes
QP Signed
Yes
QA/QC Methods
standards, blanks

Compositing

Cutoff Grade
0.3
Cutoff Unit
g/t Au

Review

Needs Review
No
Interp. Status
scored
Historical
No

Dates

Event date
2026-08-05T00:00:00.000Z

Reasoning: This sub-interval shows an exceptional gold grade from surface, contributing significantly to the overall positive results, though the GT product is weak and true width is unknown.

Positive factors

  • Exceptional gold grade of 3.24 g/t Au for an epithermal open pit deposit.
  • Intercept starts from surface, indicating potential for low-cost mining.
  • QA/QC procedures disclosed, enhancing data reliability.
  • Clear reporting of cut-off grade.

Negative factors

  • GT product of 17.82 g/t*m is weak.
  • True thickness is unknown, potentially overstating the intercept length.

Evidence · table

“3.24”

Context: 5.5

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

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.