# Solitario Resources Announces Favorable Golden Crest Metallurgical Results

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6

Original source: https://money.tmx.com/en/quote/SLR/news/8810298180230562/solitario-resources-announces-favorable-golden-crest-metallurgical-results

Publisher: tmx

Original announcement: 2025-05-19T12:30:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Solitario Resources Corp.

- Ticker: SLR

- Exchange: TSX

- Region: South Dakota

- Primary commodity: Gold

- Secondary commodities: None reported

- Document categories: Metallurgy

- Extracted: 2026-09-16 23:08:36 UTC

Narrative sentiment: 0.70 · Bullish

## Minestarters Atlas summary

Solitario Resources announced favorable preliminary metallurgical gold recovery results for its Golden Crest project in South Dakota. Bottle roll tests on oxidized samples from 2024 drilling yielded average gold recoveries of 66-69%, indicating amenability to standard extraction methods. These encouraging results support the planned 2025 drilling program, which will include offset drilling and new target testing.

Reasoning: Initial bottle roll metallurgical tests for the Golden Crest project returned favorable gold recoveries from oxidized material, indicating amenability to standard processing methods. While preliminary, these results are encouraging and de-risk the project's metallurgical profile, supporting future drilling.

- Positive factor: Favorable gold recoveries from preliminary bottle roll tests

- Positive factor: Mineralization is well oxidized and amenable to standard extraction methods

- Positive factor: QP signed off on technical information

- Positive factor: QA/QC protocols disclosed

- Negative factor: Test scale is preliminary \(bottle roll only\)

- Negative factor: Some samples showed significantly lower recoveries, identified as outliers

- Negative factor: Testing limited to a single domain \(oxidized material\)

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

Facts used in scoring: 18

## Classification and evidence

**Bench Scale Only**

Polarity: negative

Definition: Only preliminary bench tests completed — no locked-cycle or pilot work.

Why it applies: The metallurgical test work consisted of bottle roll tests, which are considered preliminary bench-scale tests.

Evidence · text

> Bottle roll metallurgical testing was conducted on twenty mineralized intervals from 2024 drilling.

**Single Domain Only**

Polarity: negative

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

Why it applies: The test work focused on oxidized mineralization, indicating a single metallurgical domain was tested.

Evidence · text

> mineralized intervals in both drill holes were all well oxidized, with oxidation extending below 362 meters in GC-008

**QP/CP Signed**

Polarity: positive

Story-specific tag

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: The scientific and technical information in the release was reviewed and approved by a Qualified Person.

Evidence · text

> The scientific and technical information contained in this news release has been reviewed and approved by Walter Hunt, who is a qualified person as defined by NI 43-101

**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: The release mentions that QA/QC protocols were detailed in previous news releases and samples were prepared and analyzed by an independent laboratory.

Evidence · text

> All Golden Crest core and bottle roll samples have been prepared and analyzed at the American Assay Laboratories in Reno, Nevada, which is independent from Solitario. Core sample preparation, QA/QC protocols and the gold assay results in this release have been detailed in previous news releases.

**Multi-Domain Tested**

Polarity: positive

Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed.

Why it applies: 18 distinct composites were tested

## Extracted facts

Stored fact records: 18. Some facts used in scoring do not have a stored record.

## Metallurgical Results (18)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-0)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325313 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 84 %
- Recovery Basis: actual\_test
- Head Grade: 13.133
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows an exceptional gold recovery of 84.0% for heap leach processing, which is a very positive indicator for the project's metallurgy, despite being from a preliminary test.

- Positive factor: Exceptional recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 84.0

Context: J325313

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-1)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325302 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 62 %
- Recovery Basis: actual\_test
- Head Grade: 0.566
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 62.0% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 62.0

Context: J325302

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 62% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-2)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325329 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 85.2 %
- Recovery Basis: actual\_test
- Head Grade: 0.752
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows an exceptional gold recovery of 85.2% for heap leach processing, which is a very positive indicator for the project's metallurgy, despite being from a preliminary test.

- Positive factor: Exceptional recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 85.2

Context: J325329

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-3)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325304 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 65 %
- Recovery Basis: actual\_test
- Head Grade: 0.6
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 65.0% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 65.0

Context: J325304

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 65% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-4)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325317 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 46.6 %
- Recovery Basis: actual\_test
- Head Grade: 0.684
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a weak gold recovery of 46.6% for heap leach processing, which is at the lower end of expectations for oxidized material, even for preliminary tests.

- Positive factor: Well oxidized material

- Negative factor: Weak recovery for heap leach processing

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 46.6

Context: J325317

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 46.6% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-5)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325303 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 67.5 %
- Recovery Basis: actual\_test
- Head Grade: 1.66
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 67.5% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 67.5

Context: J325303

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 67.5% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-6)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325306 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 71.5 %
- Recovery Basis: actual\_test
- Head Grade: 1.76
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 71.5% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 71.5

Context: J325306

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 71.5% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-7)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325315 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 64 %
- Recovery Basis: actual\_test
- Head Grade: 2.55
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 64.0% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 64.0

Context: J325315

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 64% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-8)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325309 oxidized sample from GC-003
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 74.5 %
- Recovery Basis: actual\_test
- Head Grade: 1.43
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 74.5% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 74.5

Context: J325309

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 74.5% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-9)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325946 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 71.4 %
- Recovery Basis: actual\_test
- Head Grade: 3.85
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 71.4% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 71.4

Context: J325946

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 71.4% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-10)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325950 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 61.5 %
- Recovery Basis: actual\_test
- Head Grade: 0.53
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 61.5% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 61.5

Context: J325950

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 61.5% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-11)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325951 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 61.1 %
- Recovery Basis: actual\_test
- Head Grade: 1.96
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 61.1% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 61.1

Context: J325951

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 61.1% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-12)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325957 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 68.7 %
- Recovery Basis: actual\_test
- Head Grade: 3.02
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 68.7% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 68.7

Context: J325957

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 68.7% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-13)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325945 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 69.5 %
- Recovery Basis: actual\_test
- Head Grade: 1.36
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a strong gold recovery of 69.5% for heap leach processing, which is a good result for preliminary test work on oxidized material.

- Positive factor: Strong recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 69.5

Context: J325945

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 69.5% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-14)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325935 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 60.1 %
- Recovery Basis: actual\_test
- Head Grade: 0.734
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 60.1% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 60.1

Context: J325935

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 60.1% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-15)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325956 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 64.8 %
- Recovery Basis: actual\_test
- Head Grade: 0.884
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 64.8% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 64.8

Context: J325956

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 64.8% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-16)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325948 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 64 %
- Recovery Basis: actual\_test
- Head Grade: 0.65
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows a moderate gold recovery of 64.0% for heap leach processing, which is a reasonable result for preliminary test work on oxidized material.

- Positive factor: Moderate recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 64.0

Context: J325948

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 64% is below the weak band \(80%\)

### bottle roll

[Link to this fact](https://atlas-extractions.minestarters.com/news/solitario-resources-announces-favorable-golden-crest-metallurgical-results--56635950-4dc7-4d11-a4ae-4df5ab74a5f6#fact-metallurgical-facts-17)

Golden Crest · gold

#### Identity

- Project: Golden Crest
- Commodity: gold
- Region: south dakota
- Reported Region: South Dakota
- Ticker: SLR

#### Test Work

- Program Status: preliminary
- Test Type: bottle roll
- Processing Route: heap\_leach
- Sample: J325940 oxidized sample from GC-008
- Grind P80: 75 µm
- Leach Time: 48 hours

#### Recovery

- Recovery: 77.2 %
- Recovery Basis: actual\_test
- Head Grade: 0.479
- Head Grade Unit: g/t

#### Reagents

- Reagent Notes: 0.3% NaCN / 0.3% NaOH solution

#### Lab

- Laboratory: American Assay Laboratories

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-05-19T00:00:00.000Z

Reasoning: This sample shows an exceptional gold recovery of 77.2% for heap leach processing, which is a very positive indicator for the project's metallurgy, despite being from a preliminary test.

- Positive factor: Exceptional recovery for heap leach processing

- Positive factor: Well oxidized material

- Negative factor: Preliminary test scale \(bottle roll\)

Evidence · table

> 77.2

Context: J325940

#### Tags used in scoring

**Low Recovery**

Polarity: negative

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

Why it applies: 77.2% is below the weak band \(80%\)

## 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.