# Lahontan Reports Cyanide Recoveries of 81% for Gold and 60% for Silver at West Santa Fe

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715

Original source: https://money.tmx.com/en/quote/LG/news/8123398016528873/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san

Publisher: tmx

Original announcement: 2026-04-13T14:56:08.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Lahontan Gold Corp.

- Ticker: LG

- Exchange: TSX

- Region: Nevada

- Primary commodity: Gold

- Secondary commodities: Silver

- Document categories: Resource update, Metallurgy

- Extracted: 2026-09-18 06:48:14 UTC

Narrative sentiment: 0.70 · Bullish

## Minestarters Atlas summary

Lahontan Gold Corp. has reported high cyanide extractable gold \(81%\) and silver \(60%\) recoveries from pulp samples of its 2025 RC drilling program at the West Santa Fe project. These results validate previous metallurgical testing and support the project's amenability to heap leach processing.

Reasoning: The announcement reports high cyanide extractable gold \(81%\) and silver \(60%\) from recent RC drilling pulp samples, validating the project's suitability for heap leach processing and exceeding historical benchmarks.

- Positive factor: High cyanide extraction ratios for both gold and silver

- Positive factor: Results corroborate and exceed historical metallurgical expectations

- Positive factor: QA/QC protocols are clearly disclosed with certified lab usage

- Positive factor: Amenability to heap leach processing confirmed

- Negative factor: Metallurgical results are based on pulp samples from RC drilling, not core

Facts used in scoring: 6

## Classification and evidence

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: Gold cyanide extraction of 81% is in the strong/exceptional band for heap leach routes.

Evidence · text

> CN extractable gold averaged 81%

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: The testing specifically mimics potential recoveries utilizing CN heap leach processing.

Evidence · text

> mimics potential gold and silver recoveries utilizing CN heap leach processing

**QA/QC Disclosed**

Polarity: positive

Story-specific tag

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: Release includes detailed QA/QC protocols, including CRM and blank insertion rates and lab name.

Evidence · text

> The QA/QC program consisted of the insertion of coarse blanks and Certified Reference Materials \(CRM\)

**Indicated Resource**

Polarity: positive

Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: The document mentions an existing Indicated Mineral Resource for the Santa Fe Mine project.

Evidence · text

> has a Canadian National Instrument 43-101 compliant Indicated Mineral Resource of 1,539,000 oz Au Eq

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: the document describes a mill\_cil route \("CIP"\)

**Single Domain Only**

Polarity: negative

Definition: Testing limited to one composite or domain — representativeness not established.

Why it applies: only one composite was tested

## Extracted facts

Stored fact records: 6. Some facts used in scoring do not have a stored record.

## Resource Estimates (4)

### indicated

[Link to this fact](https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715#fact-resource-facts-2)

Santa Fe Mine · gold

#### Identity

- Project: Santa Fe Mine
- Commodity: gold
- Region: usa\_nv
- Reported Region: Nevada
- Ticker: LG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- Resource group id: resource:b9ec7552fb36cc9822bf

#### Resource Data

- Category: indicated
- Tonnes: 48393000
- Grade: 0.92
- Grade Unit: g/t
- Contained Metal: 1539000
- Contained Unit: oz au eq

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-04-13T00:00:00.000Z

Reasoning: Existing resource mentioned for context.

Evidence · text

> Indicated Mineral Resource of 1,539,000 oz Au Eq \(48,393,000 tonnes grading 0.92 g/t Au and 7.18 g/t Ag, together grading 0.99 g/t Au Eq\)

#### Tags used in scoring

**Indicated Resource**

Polarity: positive

Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

**NI 43-101 Compliant**

Polarity: positive

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

Why it applies: reporting\_standards includes ni\_43\_101

### indicated

[Link to this fact](https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715#fact-resource-facts-3)

Santa Fe Mine · silver

#### Identity

- Project: Santa Fe Mine
- Commodity: silver
- Region: usa\_nv
- Reported Region: Nevada
- Ticker: LG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- Resource group id: resource:b9ec7552fb36cc9822bf

#### Resource Data

- Category: indicated
- Tonnes: 48393000
- Grade: 7.18
- Grade Unit: g/t
- Contained Metal: 1539000
- Contained Unit: oz au eq

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-04-13T00:00:00.000Z

Reasoning: Existing resource mentioned for context.

Evidence · text

> Indicated Mineral Resource of 1,539,000 oz Au Eq \(48,393,000 tonnes grading 0.92 g/t Au and 7.18 g/t Ag, together grading 0.99 g/t Au Eq\)

#### Tags used in scoring

**Indicated Resource**

Polarity: positive

Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

**NI 43-101 Compliant**

Polarity: positive

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

Why it applies: reporting\_standards includes ni\_43\_101

### inferred

[Link to this fact](https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715#fact-resource-facts-4)

Santa Fe Mine · gold

#### Identity

- Project: Santa Fe Mine
- Commodity: gold
- Region: usa\_nv
- Reported Region: Nevada
- Ticker: LG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- Resource group id: resource:3a82ec052526ee1bcd95

#### Resource Data

- Category: inferred
- Tonnes: 16760000
- Grade: 0.74
- Grade Unit: g/t
- Contained Metal: 411000
- Contained Unit: oz au eq

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-04-13T00:00:00.000Z

Reasoning: Existing resource mentioned for context.

Evidence · text

> Inferred Mineral Resource of 411,000 oz Au Eq \(16,760,000 grading 0.74 g/t Au and 3.25 g/t Ag, together grading 0.76 g/t Au Eq\)

#### Tags used in scoring

**Inferred Resource**

Polarity: negative

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

Why it applies: category is "inferred"

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

**NI 43-101 Compliant**

Polarity: positive

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

Why it applies: reporting\_standards includes ni\_43\_101

### inferred

[Link to this fact](https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715#fact-resource-facts-5)

Santa Fe Mine · silver

#### Identity

- Project: Santa Fe Mine
- Commodity: silver
- Region: usa\_nv
- Reported Region: Nevada
- Ticker: LG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- Resource group id: resource:3a82ec052526ee1bcd95

#### Resource Data

- Category: inferred
- Tonnes: 16760000
- Grade: 3.25
- Grade Unit: g/t
- Contained Metal: 411000
- Contained Unit: oz au eq

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-04-13T00:00:00.000Z

Reasoning: Existing resource mentioned for context.

Evidence · text

> Inferred Mineral Resource of 411,000 oz Au Eq \(16,760,000 grading 0.74 g/t Au and 3.25 g/t Ag, together grading 0.76 g/t Au Eq\)

#### Tags used in scoring

**Inferred Resource**

Polarity: negative

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

Why it applies: category is "inferred"

**Cut-off Undisclosed**

Polarity: negative

Definition: High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff\_grade was stated

**NI 43-101 Compliant**

Polarity: positive

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

Why it applies: reporting\_standards includes ni\_43\_101

## Metallurgical Results (2)

### cyanide extraction

[Link to this fact](https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715#fact-metallurgical-facts-0)

West Santa Fe · gold

#### Identity

- Project: West Santa Fe
- Commodity: gold
- Region: usa\_nv
- Reported Region: Nevada
- Ticker: LG

#### Test Work

- Program Status: preliminary
- Test Type: cyanide extraction
- Processing Route: CN heap leach
- Sample: pulp samples from 2025 RC drilling program

#### Recovery

- Recovery: 81 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: American Assay Laboratories \(AAL\)

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-04-13T00:00:00.000Z

Reasoning: 81% recovery is a strong result for heap leach amenability.

- Positive factor: Exceeds historical 70% gold recovery benchmark

Evidence · text

> CN extractable gold averaged 81%

#### Tags used in scoring

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: processing\_route matches the heap\_leach signal

**High Recovery**

Polarity: positive

Definition: Recovery at or above the exceptional band for the commodity and processing route.

Why it applies: 81% is at or above the exceptional band \(75%\)

### cyanide extraction

[Link to this fact](https://atlas-extractions.minestarters.com/news/lahontan-reports-cyanide-recoveries-of-81-for-gold-and-60-for-silver-at-west-san--a061800b-5972-465e-96f7-be4369085715#fact-metallurgical-facts-1)

West Santa Fe · silver

#### Identity

- Project: West Santa Fe
- Commodity: silver
- Region: usa\_nv
- Reported Region: Nevada
- Ticker: LG

#### Test Work

- Program Status: preliminary
- Test Type: cyanide extraction
- Processing Route: CN heap leach
- Sample: pulp samples from 2025 RC drilling program

#### Recovery

- Recovery: 60 %
- Recovery Basis: actual\_test

#### Lab

- Laboratory: American Assay Laboratories \(AAL\)

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-04-13T00:00:00.000Z

Reasoning: 60% silver recovery is high for cyanide heap leach.

- Positive factor: Exceeds historical 50% silver recovery benchmark

Evidence · text

> CN extractable silver averaged 60%

#### Tags used in scoring

**Heap Leach Route**

Polarity: neutral

Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.

Why it applies: processing\_route matches the heap\_leach signal

**Low Recovery**

Polarity: negative

Definition: Recovery below the weak band for the commodity and processing route.

Why it applies: 60% is below the weak band \(75%\)

## 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.