Osisko Metals Files NI 43-101 Technical Report for the Gaspé Copper Project

Original announcement by tmx on

Company
Osisko Metals Incorporated
Ticker
OM
Exchange
TSX
Region
Quebec, Canada
Primary commodity
Copper
Secondary commodities
Molybdenum, Silver
Document categories
Resource update
Extracted
2026-08-26 02:40:13 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Osisko Metals has filed a NI 43-101 Technical Report for the Gaspé Copper Project in Quebec, featuring an updated 2026 Mineral Resource Estimate. The estimate includes 1,834.2 Mt of M&I and Inferred resources at 0.32% CuEq, supported by independent Qualified Persons.

Reasoning: The filing of a formal NI 43-101 Technical Report with an updated MRE provides high-confidence geological data for a large-scale copper project.

Positive factors

  • Significant resource scale
  • QP/CP signed
  • NI 43-101 compliant
  • Detailed CuEq assumptions disclosed

Negative factors

  • Large Inferred component

Facts used in scoring: 15

Atlas analysis — Osisko Metals Incorporated: Osisko Metals Files NI 43-101 Technical Report for the Gaspé Copper Project. measured 136500000 tonnes; indicated 1697700000 tonnes; inferred 238800000 tonnes

Classification and evidence

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: The report is a formal NI 43-101 Technical Report filed on SEDAR+.

Evidence · text

“Osisko Metals Files NI 43-101 Technical Report”

QP/CP Signedpositive

Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.

Why it applies: Three independent Qualified Persons (P.Geo and P.Eng) are named and responsible for the report.

Evidence · text

“All three qualified persons are "independent" of the Company”

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: The base-case cut-off grade of 0.16% CuEq is explicitly stated.

Evidence · text

“base-case cut-off grade of 0.16% copper equivalent (" CuEq ")”

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: A significant portion of the resource is in the Inferred category.

Evidence · text

“The quantity and grade of reported inferred mineral resources are uncertain in nature”

Extracted facts

Stored fact records: 15. Some facts used in scoring do not have a stored record.

Resource Estimates (15)

measuredcopperTonnes: 136500000Grade: 1128Grade Unit: m lbsContained Metal: 512Contained Unit: ktView all details
Link to this fact

Identity

Commodity
copper
Ticker
OM

Resource Data

Category
measured
Tonnes
136500000
Grade
1128
Grade Unit
m lbs
Contained Metal
512
Contained Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Measured resource component of the updated MRE.

Evidence · table

“1,128”

Context: 136.5

measuredmolybdenumTonnes: 136500000Grade: 0.014Grade Unit: %View all details
Link to this fact

Identity

Commodity
molybdenum
Ticker
OM

Resource Data

Category
measured
Tonnes
136500000
Grade
0.014
Grade Unit
%

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Byproduct molybdenum in measured category.

Evidence · table

“0.014”

Context: 136.5

measuredsilverTonnes: 136500000Grade: 8.7Grade Unit: mozView all details
Link to this fact

Identity

Commodity
silver
Ticker
OM

Resource Data

Category
measured
Tonnes
136500000
Grade
8.7
Grade Unit
moz

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Byproduct silver in measured category.

Evidence · table

“8.7”

Context: 136.5

indicatedcopperTonnes: 1697700000Grade: 9639Grade Unit: m lbsContained Metal: 4373Contained Unit: ktView all details
Link to this fact

Identity

Commodity
copper
Ticker
OM

Resource Data

Category
indicated
Tonnes
1697700000
Grade
9639
Grade Unit
m lbs
Contained Metal
4373
Contained Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Indicated resource component of the updated MRE.

Evidence · table

“9,639”

Context: 1,697.7

indicatedmolybdenumTonnes: 1697700000Grade: 0.017Grade Unit: %View all details
Link to this fact

Identity

Commodity
molybdenum
Ticker
OM

Resource Data

Category
indicated
Tonnes
1697700000
Grade
0.017
Grade Unit
%

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Byproduct molybdenum in indicated category.

Evidence · table

“0.017”

Context: 1,697.7

indicatedsilverTonnes: 1697700000Grade: 84.1Grade Unit: mozView all details
Link to this fact

Identity

Commodity
silver
Ticker
OM

Resource Data

Category
indicated
Tonnes
1697700000
Grade
84.1
Grade Unit
moz

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Byproduct silver in indicated category.

Evidence · table

“84.1”

Context: 1,697.7

inferredcopperTonnes: 238800000Grade: 2158Grade Unit: m lbsContained Metal: 979Contained Unit: ktView all details
Link to this fact

Identity

Commodity
copper
Ticker
OM

Resource Data

Category
inferred
Tonnes
238800000
Grade
2158
Grade Unit
m lbs
Contained Metal
979
Contained Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Inferred resource component of the updated MRE.

Negative factors

  • Inferred category uncertainty

Evidence · table

“2,158”

Context: 238.8

inferredmolybdenumTonnes: 238800000Grade: 0.016Grade Unit: %View all details
Link to this fact

Identity

Commodity
molybdenum
Ticker
OM

Resource Data

Category
inferred
Tonnes
238800000
Grade
0.016
Grade Unit
%

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Byproduct molybdenum in inferred category.

Evidence · table

“0.016”

Context: 238.8

inferredsilverTonnes: 238800000Grade: 14.5Grade Unit: mozView all details
Link to this fact

Identity

Commodity
silver
Ticker
OM

Resource Data

Category
inferred
Tonnes
238800000
Grade
14.5
Grade Unit
moz

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Byproduct silver in inferred category.

Evidence · table

“14.5”

Context: 238.8

measuredmoTonnes: 136500000Grade: 19Grade Unit: ktView all details
Link to this fact

Identity

Commodity
mo
Ticker
OM

Resource Data

Category
measured
Tonnes
136500000
Grade
19
Grade Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Measured resource component of the updated MRE. (Expanded from multi-commodity resource table for completeness.)

Evidence · table

“19”

Context: 136.5

indicatedmoTonnes: 1697700000Grade: 286.4Grade Unit: ktView all details
Link to this fact

Identity

Commodity
mo
Ticker
OM

Resource Data

Category
indicated
Tonnes
1697700000
Grade
286.4
Grade Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Indicated resource component of the updated MRE. (Expanded from multi-commodity resource table for completeness.)

Evidence · table

“286.4”

Context: 1,697.7

indicatedcopperTonnes: 1834200000Grade: 10766Grade Unit: m lbsContained Metal: 4883Contained Unit: ktView all details
Link to this fact

Identity

Commodity
copper
Ticker
OM

Resource Data

Category
indicated
Tonnes
1834200000
Grade
10766
Grade Unit
m lbs
Contained Metal
4883
Contained Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Indicated resource component of the updated MRE. (Expanded from multi-commodity resource table for completeness.)

Evidence · table

“10,766”

Context: 1,834.2

indicatedmoTonnes: 1834200000Grade: 305.4Grade Unit: ktView all details
Link to this fact

Identity

Commodity
mo
Ticker
OM

Resource Data

Category
indicated
Tonnes
1834200000
Grade
305.4
Grade Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Indicated resource component of the updated MRE. (Expanded from multi-commodity resource table for completeness.)

Evidence · table

“305.4”

Context: 1,834.2

indicatedsilverTonnes: 1834200000Grade: 92.8Grade Unit: mozView all details
Link to this fact

Identity

Commodity
silver
Ticker
OM

Resource Data

Category
indicated
Tonnes
1834200000
Grade
92.8
Grade Unit
moz

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Indicated resource component of the updated MRE. (Expanded from multi-commodity resource table for completeness.)

Evidence · table

“92.8”

Context: 1,834.2

inferredmoTonnes: 238800000Grade: 37.6Grade Unit: ktView all details
Link to this fact

Identity

Commodity
mo
Ticker
OM

Resource Data

Category
inferred
Tonnes
238800000
Grade
37.6
Grade Unit
kt

Review

Needs Review
No
Historical
No

Dates

Event date
2026-05-29T00:00:00.000Z

Reasoning: Inferred resource component of the updated MRE. (Expanded from multi-commodity resource table for completeness.)

Negative factors

  • Inferred category uncertainty

Evidence · table

“37.6”

Context: 238.8

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.