# G Mining Ventures Reports Year-End 2025 Mineral Reserves and Resources; Gold Reserves Increase 221% to 6.52 Moz

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677

Original source: https://money.tmx.com/en/quote/GMIN/news/6962358451742209/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese

Publisher: tmx

Original announcement: 2026-03-12T10:30:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: G Mining Ventures Corp.

- Ticker: GMIN

- Exchange: TSX

- Region: Unavailable

- Primary commodity: Gold

- Secondary commodities: None reported

- Document categories: Resource update

- Extracted: 2026-08-23 14:53:17 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

G Mining Ventures reported a 221% year-over-year increase in gold reserves, reaching 6.52 Moz Proven and Probable at an average grade of 1.60 g/t Au as of December 31, 2025. This growth was primarily driven by the completion of the Oko West Feasibility Study, which added 4.64 Moz of P&P reserves, alongside global mineral resources totaling 9.17 Moz Measured and Indicated and 1.17 Moz Inferred. The company also highlighted the conversion of 2.40 Moz of Inferred Resources to Indicated at Oko West and provided updates on the advancement of its Tocantinzinho and Gurupi projects.

Reasoning: G Mining Ventures reported a 221% increase in gold reserves to 6.52 Moz, driven by the completion of the Oko West Feasibility Study which added 4.64 Moz of P&P reserves. The company also updated its global resources to 9.17 Moz M&I and 1.17 Moz Inferred, with significant conversion of Inferred to Indicated at Oko West, and provided positive development updates for its three gold projects.

- Positive factor: Significant increase in gold reserves \(221% year-over-year\)

- Positive factor: Large total P&P reserves \(6.52 Moz\) and M&I resources \(9.17 Moz\)

- Positive factor: Oko West Feasibility Study completed, adding substantial reserves and outlining robust mine life

- Positive factor: Oko West advancing towards first gold production in H2 2027

- Positive factor: Conversion of 2.40 Moz Inferred Resources to Indicated category at Oko West

- Positive factor: Tocantinzinho supporting ongoing operations and cash generation

- Positive factor: Gurupi advancing through technical studies with significant exploration budget

- Positive factor: NI 43-101 compliant estimates with QP sign-offs

- Negative factor: Depletion at Tocantinzinho due to production

- Negative factor: Gurupi MRE Qualified Person is not independent of the corporation

- Negative factor: Multiple cut-off grades for different materials and projects, requiring careful comparison

Facts used in scoring: 25

## Classification and evidence

**Tonnage Growth**

Polarity: positive

Definition: Significant tonnage increase \(≥15%\) vs prior estimate with grade maintained or improved.

Why it applies: Proven and Probable Mineral Reserves increased by 221% year-over-year to 6.52 Moz.

Evidence · text

> Proven and Probable Mineral Reserves total 6.52 Moz of gold at an average grade of 1.60 g/t Au as of December 31, 2025, representing a 221% year-over-year increase.

**NI 43-101 Compliant**

Polarity: positive

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

Why it applies: The mineral reserves and resources are prepared in accordance with National Instrument 43-101.

Evidence · text

> prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects \(“ NI 43-101 ”\)

**QP/CP Signed**

Polarity: positive

Definition: 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: Qualified Persons are named for the Gurupi, Tocantinzinho, and Oko West estimates.

Evidence · text

> The Qualified Person for the Gurupi MRE is Pascal Delisle, P.Geo. \(OGQ \#1378\)... The Qualified Person for the Mineral Resources Estimate is Julie-Anaïs Debreil, Ph.D., P.Geo \(OGQ \#2106\)... The qualified person for the Mineral Reserve estimate is Alexandre Burelle, P.Eng. \(OIQ \#5019855\)

**Category Upgrade**

Polarity: positive

Definition: Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.

Why it applies: 2.40 Moz of Inferred Resources were converted into the Indicated category at Oko West.

Evidence · text

> conversion of 2.40 Moz of Inferred Resources \(YE 2024\) into the Indicated category

**DFS-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.

Why it applies: The Oko West Feasibility Study was completed, which typically supports a DFS-level estimate.

Evidence · text

> Following the completion of the 2025 Feasibility Study, Oko West reports 4.64 Moz of Proven and Probable Reserves

**PEA-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: An updated Preliminary Economic Assessment \(PEA\) is targeted for Gurupi in H2 2026.

Evidence · text

> an updated Mineral Resource Estimate \(“ MRE ”\) and a Preliminary Economic Assessment \(“ PEA ”\) targeted for H2 2026.

**Resource Update**

Polarity: neutral

Definition: Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The document reports year-end 2025 consolidated mineral reserves and resources.

Evidence · text

> G Mining Ventures Reports Year-End 2025 Mineral Reserves and Resources

**Cut-off Disclosed**

Polarity: positive

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

Why it applies: Cut-off grades are disclosed for Gurupi, Tocantinzinho, and Oko West projects for both resources and reserves.

Evidence · text

> The cut-offs used to report Contact and Blanket Mineral Resources are 0.34 g/t Au in transition and 0.35 g/t Au in rock; for Chega Tudo are 0.36 g/t Au in transition and 0.37 g/t Au in rock.

**Non-Independent QP**

Polarity: negative

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The Qualified Person for the Gurupi MRE is not considered independent of the corporation.

Evidence · text

> The Qualified Person for the Gurupi MRE is Pascal Delisle, P.Geo. \(OGQ \#1378\) and is not considered “independent” of the corporation within the meaning of section 1.5 of NI 43-101.

## Extracted facts

Stored fact records: 25. Some facts used in scoring do not have a stored record.

## Resource Estimates (25)

### measured

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-0)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Region: brazil
- Reported Region: Pará State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: measured
- Tonnes: 23986000
- Grade: 1.2
- Grade Unit: g/t
- Contained Metal: 927000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Measured Resources represent the highest confidence category, providing a robust foundation for the project. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Measured Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

Evidence · table

> 1.20

Context: 23,986

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-1)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Region: brazil
- Reported Region: Pará State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: indicated
- Tonnes: 23669000
- Grade: 1.32
- Grade Unit: g/t
- Contained Metal: 1001000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Indicated In-Pit Resources provide reasonable geological confidence for the project. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Indicated Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

Evidence · table

> 1.32

Context: 23,669

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-2)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Region: brazil
- Reported Region: Pará State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: inferred
- Tonnes: 342000
- Grade: 1.28
- Grade Unit: g/t
- Contained Metal: 14000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Inferred In-Pit Resources are speculative and have lower geological confidence. While part of an overall positive update, this category carries higher risk.

- Negative factor: Inferred Resource

Evidence · table

> 1.28

Context: 342

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-3)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: indicated
- Tonnes: 80259000
- Grade: 2.1
- Grade Unit: g/t
- Contained Metal: 5407000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Oko West shows a substantial Indicated Resource, benefiting from the conversion of Inferred to Indicated, which significantly de-risks the project. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Indicated Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Category Upgrade

Evidence · table

> 2.10

Context: 80,259

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-4)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: inferred
- Tonnes: 5127000
- Grade: 2.36
- Grade Unit: g/t
- Contained Metal: 390000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: While the Inferred Resource is part of a positive update, this category has lower geological confidence. However, the conversion of Inferred to Indicated is a positive sign for future upgrades.

- Negative factor: Inferred Resource

Evidence · table

> 2.36

Context: 5,127

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-5)

Gurupi · gold

#### Identity

- Project: Gurupi
- Commodity: gold
- Region: brazil
- Reported Region: Maranhão State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: indicated
- Tonnes: 43512000
- Grade: 1.31
- Grade Unit: g/t
- Contained Metal: 1830000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Gurupi's Indicated In-Pit Resource is a significant component of the company's portfolio, but the QP for this MRE is not independent, which slightly lowers confidence. The estimate is NI 43-101 compliant with disclosed cut-off grades.

- Positive factor: Indicated Resource

- Positive factor: NI 43-101 compliant

- Positive factor: Cut-off Disclosed

- Negative factor: Non-Independent QP

Evidence · table

> 1.31

Context: 43,512

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-6)

Gurupi · gold

#### Identity

- Project: Gurupi
- Commodity: gold
- Region: brazil
- Reported Region: Maranhão State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: inferred
- Tonnes: 18518000
- Grade: 1.29
- Grade Unit: g/t
- Contained Metal: 770000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Gurupi's Inferred In-Pit Resource is speculative and has lower geological confidence, further impacted by the non-independent QP for this MRE.

- Negative factor: Inferred Resource

- Negative factor: Non-Independent QP

Evidence · table

> 1.29

Context: 18,518

### measured

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-7)

Total · gold

#### Identity

- Project: Total
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: measured
- Tonnes: 23986000
- Grade: 1.2
- Grade Unit: g/t
- Contained Metal: 927000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: The total Measured Resources across the portfolio provide a high-confidence base for the company's assets, contributing to the overall positive update.

- Positive factor: Measured Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

Evidence · table

> 1.20

Context: 23,986

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-8)

Total · gold

#### Identity

- Project: Total
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: indicated
- Tonnes: 147440000
- Grade: 1.74
- Grade Unit: g/t
- Contained Metal: 8238000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: The substantial total Indicated Resources, boosted by Inferred to Indicated conversion, significantly de-risk the company's portfolio and are a key positive outcome of this update.

- Positive factor: Indicated Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Category Upgrade

Evidence · table

> 1.74

Context: 147,440

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-9)

Total · gold

#### Identity

- Project: Total
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: inferred
- Tonnes: 23987000
- Grade: 1.52
- Grade Unit: g/t
- Contained Metal: 1174000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: While the total Inferred Resources are still significant, this category carries lower geological confidence. However, the overall trend of Inferred conversion to Indicated is positive.

- Negative factor: Inferred Resource

Evidence · table

> 1.52

Context: 23,987

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-10)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Region: brazil
- Reported Region: Pará State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: proven
- Tonnes: 25545000
- Grade: 1.14
- Grade Unit: g/t
- Contained Metal: 939000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Proven Reserves represent the highest confidence category with demonstrated economic viability, supporting ongoing operations. While there is depletion, the estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Proven Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Negative factor: Depletion at Tocantinzinho due to production

Evidence · table

> 1.14

Context: 25,545

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-11)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: probable
- Tonnes: 24240000
- Grade: 1.2
- Grade Unit: g/t
- Contained Metal: 935000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Probable In-Pit Reserves contribute to the economic viability of the operating mine. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Probable Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Negative factor: Depletion at Tocantinzinho due to production

Evidence · table

> 1.20

Context: 24,240

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-12)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: probable
- Tonnes: 76555000
- Grade: 1.89
- Grade Unit: g/t
- Contained Metal: 4642000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: The significant Probable Reserves at Oko West, resulting from the Feasibility Study, are a major positive driver for the company, demonstrating strong economic viability and supporting the project's development.

- Positive factor: Probable Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Tonnage Growth

- Positive factor: DFS-Supporting

Evidence · table

> 1.89

Context: 76,555

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-13)

Total · gold

#### Identity

- Project: Total
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: proven
- Tonnes: 25545000
- Grade: 1.14
- Grade Unit: g/t
- Contained Metal: 939000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: The total Proven Reserves contribute to the overall significant increase in the company's reserve base, providing a high-confidence foundation for future production.

- Positive factor: Proven Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Tonnage Growth

Evidence · table

> 1.14

Context: 25,545

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-14)

Total · gold

#### Identity

- Project: Total
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: probable
- Tonnes: 100795000
- Grade: 1.72
- Grade Unit: g/t
- Contained Metal: 5577000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: The substantial total Probable Reserves are a key driver of the 221% increase in overall reserves, significantly enhancing the company's production potential and economic outlook.

- Positive factor: Probable Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Tonnage Growth

Evidence · table

> 1.72

Context: 100,795

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-15)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: proven
- Tonnes: 7135000
- Grade: 0.73
- Grade Unit: g/t
- Contained Metal: 167000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Proven Reserves in stockpiles contribute to the overall reserve base, providing flexibility for operations. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Proven Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Negative factor: Depletion at Tocantinzinho due to production

Evidence · table

> 0.73

Context: 7,135

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-16)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Ticker: GMIN

#### Resource Data

- Category: proven
- Tonnes: 18410000
- Grade: 1.3
- Grade Unit: g/t
- Contained Metal: 772000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Proven In-Pit Reserves are a high-confidence component of the operating mine, supporting ongoing production. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Proven Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Negative factor: Depletion at Tocantinzinho due to production

Evidence · table

> 1.30

Context: 18,410

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-17)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: probable
- Tonnes: 62374000
- Grade: 1.57
- Grade Unit: g/t
- Contained Metal: 3156000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Significant Probable In-Pit Reserves at Oko West, derived from the Feasibility Study, are a major positive for the project's economic viability and future production.

- Positive factor: Probable Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Tonnage Growth

- Positive factor: DFS-Supporting

Evidence · table

> 1.57

Context: 62,374

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-18)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: probable
- Tonnes: 14181000
- Grade: 3.26
- Grade Unit: g/t
- Contained Metal: 1486000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Probable Underground Reserves at Oko West add a high-grade component to the project's economic viability, further enhancing its production profile.

- Positive factor: Probable Reserve

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Tonnage Growth

- Positive factor: DFS-Supporting

Evidence · table

> 3.26

Context: 14,181

### measured

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-19)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Region: brazil
- Reported Region: Pará State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: measured
- Tonnes: 7135000
- Grade: 0.73
- Grade Unit: g/t
- Contained Metal: 167000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Measured Resources in stockpiles provide a high-confidence component to the overall resource base. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Measured Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

Evidence · table

> 0.73

Context: 7,135

### measured

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-20)

Tocantinzinho · gold

#### Identity

- Project: Tocantinzinho
- Commodity: gold
- Region: brazil
- Reported Region: Pará State, Brazil
- Ticker: GMIN

#### Resource Data

- Category: measured
- Tonnes: 16851000
- Grade: 1.4
- Grade Unit: g/t
- Contained Metal: 760000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Measured In-Pit Resources are a high-confidence component of the resource base, providing a strong foundation for future planning. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Measured Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

Evidence · table

> 1.40

Context: 16,851

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-21)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: indicated
- Tonnes: 73035000
- Grade: 2
- Grade Unit: g/t
- Contained Metal: 4689000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Oko West shows a substantial Indicated In-Pit Resource, benefiting from the conversion of Inferred to Indicated, which significantly de-risks the project. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Indicated Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Category Upgrade

Evidence · table

> 2.00

Context: 73,035

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-22)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: inferred
- Tonnes: 1542000
- Grade: 1.06
- Grade Unit: g/t
- Contained Metal: 52000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: While the Inferred In-Pit Resource is part of a positive update, this category has lower geological confidence. However, the conversion of Inferred to Indicated is a positive sign for future upgrades.

- Negative factor: Inferred Resource

Evidence · table

> 1.06

Context: 1,542

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-23)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: indicated
- Tonnes: 7223000
- Grade: 3.09
- Grade Unit: g/t
- Contained Metal: 718000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: Oko West shows a high-grade Indicated Underground Resource, benefiting from the conversion of Inferred to Indicated, which significantly de-risks the project. The estimate is NI 43-101 compliant with QP sign-off and disclosed cut-off grades.

- Positive factor: Indicated Resource

- Positive factor: NI 43-101 compliant

- Positive factor: QP/CP Signed

- Positive factor: Cut-off Disclosed

- Positive factor: Category Upgrade

Evidence · table

> 3.09

Context: 7,223

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/g-mining-ventures-reports-year-end-2025-mineral-reserves-and-resources-gold-rese--1662be33-4f4a-4841-8eb7-b6f5cfb39677#fact-resource-facts-24)

Oko West · gold

#### Identity

- Project: Oko West
- Commodity: gold
- Region: guyana
- Reported Region: Guyana
- Ticker: GMIN

#### Resource Data

- Category: inferred
- Tonnes: 3585000
- Grade: 2.93
- Grade Unit: g/t
- Contained Metal: 337000
- Contained Unit: oz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-03-12T00:00:00.000Z

Reasoning: While the Inferred Underground Resource is part of a positive update, this category has lower geological confidence. However, the conversion of Inferred to Indicated is a positive sign for future upgrades.

- Negative factor: Inferred Resource

Evidence · table

> 2.93

Context: 3,585

## 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.