# HIGH-GRADE SPODUMENE AND TANTALUM CONCENTRATES CONFIRMED AT CASE LAKE

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/high-grade-spodumene-and-tantalum-concentrates-confirmed-at-case-lake--7828b656-8517-4664-9a73-a5b483c0d501

Original source: https://money.tmx.com/en/quote/PWM/news/5629284417269230/high-grade-spodumene-and-tantalum-concentrates-confirmed-at-case-lake

Publisher: tmx

Original announcement: 2025-07-07T12:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Power Metals Corp

- Ticker: PWM

- Exchange: TSX

- Region: Ontario, Canada

- Primary commodity: Lithium

- Secondary commodities: Tantalum, Cesium, Iron ore

- Document categories: Metallurgy

- Extracted: 2026-09-14 19:03:56 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

Power Metals Corp has confirmed high-grade lithium and tantalum concentrates at the Case Lake Project through DMS, flotation, and gravity/magnetic separation test work. The results include spodumene concentrates grading up to 7.70% Li2O and tantalum concentrates grading 12,508 ppm Ta, validating the project's multi-element potential.

Reasoning: Metallurgical test work successfully demonstrated high-grade concentrates for three critical minerals \(lithium, tantalum, and cesium\) from waste material, significantly de-risking the project's multi-asset potential.

- Positive factor: High-grade spodumene concentrate \(7.20% Li2O\)

- Positive factor: High flotation recovery \(99.50%\)

- Positive factor: Low iron impurities \(0.66%\)

- Positive factor: Successful tantalum recovery \(12,508 ppm\)

- Positive factor: Demonstrated multi-element potential \(Li, Ta, Cs\)

Facts used in scoring: 4

## Classification and evidence

**High Recovery**

Polarity: positive

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

Why it applies: Flotation stage recovery reached 99.50% and DMS recovery was 85.82%.

Evidence · text

> High 99.50% flotation stage recovery

**Mill Route**

Polarity: neutral

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

Why it applies: Test work utilized flotation techniques.

Evidence · text

> utilised DMS and Flotation techniques

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: the document describes a gravity route \("gravity"\)

**Multi-Domain Tested**

Polarity: positive

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

Why it applies: 3 distinct composites were tested

## Extracted facts

Stored fact records: 4. Some facts used in scoring do not have a stored record.

## Metallurgical Results (4)

### flotation

[Link to this fact](https://atlas-extractions.minestarters.com/news/high-grade-spodumene-and-tantalum-concentrates-confirmed-at-case-lake--7828b656-8517-4664-9a73-a5b483c0d501#fact-metallurgical-facts-0)

Case Lake · lithium

#### Identity

- Project: Case Lake
- Commodity: lithium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: flotation
- Processing Route: DMS and Flotation
- Sample: Final Spodumene Concentrate \(-12.7+0.025mm\)

#### Recovery

- Recovery: 78.8 %
- Recovery Basis: actual\_test
- Head Grade: 1.58
- Head Grade Unit: %
- Conc. Grade: 7.2
- Conc. Grade Unit: %
- Tailings Grade: 0.05
- Tailings Grade Unit: %
- Mass Pull: 17.8 %

#### Lab

- Laboratory: Nagrom the Mineral Processor
- Consultant: SGS Lakefield

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-07T00:00:00.000Z

Reasoning: 7.20% Li2O concentrate is exceptionally high grade and surpasses market standards.

- Positive factor: High grade concentrate \(7.20%\)

- Positive factor: Low iron impurities

Evidence · table

> 7.20

Context: 17.8

#### Tags used in scoring

**Mill Route**

Polarity: neutral

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

Why it applies: processing\_route matches the flotation signal

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Byproduct Commodity**

Polarity: neutral

Definition: The tested commodity is a byproduct rather than the primary economic driver.

Why it applies: the release describes a byproduct credit

### DMS

[Link to this fact](https://atlas-extractions.minestarters.com/news/high-grade-spodumene-and-tantalum-concentrates-confirmed-at-case-lake--7828b656-8517-4664-9a73-a5b483c0d501#fact-metallurgical-facts-1)

Case Lake · lithium

#### Identity

- Project: Case Lake
- Commodity: lithium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: DMS
- Processing Route: DMS
- Sample: DMS Concentrate

#### Recovery

- Recovery: 85.82 %
- Recovery Basis: actual\_test
- Head Grade: 1.58
- Head Grade Unit: %
- Conc. Grade: 5.24
- Conc. Grade Unit: %
- Mass Pull: 26.1 %

#### Lab

- Laboratory: Nagrom the Mineral Processor
- Consultant: SGS Lakefield

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-07T00:00:00.000Z

Reasoning: DMS concentrate provides a solid intermediate step with good recovery.

- Positive factor: Solid recovery \(85.82%\)

- Positive factor: Acceptable grade \(5.24%\)

Evidence · table

> 5.24

Context: 26.1

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**High Recovery**

Polarity: positive

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

Why it applies: 85.82% is at or above the exceptional band \(80%\)

**Byproduct Commodity**

Polarity: neutral

Definition: The tested commodity is a byproduct rather than the primary economic driver.

Why it applies: the release describes a byproduct credit

### wet table and magnetic separation

[Link to this fact](https://atlas-extractions.minestarters.com/news/high-grade-spodumene-and-tantalum-concentrates-confirmed-at-case-lake--7828b656-8517-4664-9a73-a5b483c0d501#fact-metallurgical-facts-2)

Case Lake · tantalum

#### Identity

- Project: Case Lake
- Commodity: tantalum
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: wet table and magnetic separation
- Processing Route: WT and MS
- Sample: Combined Ta Concentrate \(-0.5mm\)

#### Recovery

- Recovery: 44.8 %
- Recovery Basis: actual\_test
- Head Grade: 144
- Head Grade Unit: ppm
- Conc. Grade: 12508
- Conc. Grade Unit: ppm
- Mass Pull: 0.52 %

#### Lab

- Laboratory: Nagrom the Mineral Processor
- Consultant: SGS Lakefield

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-07T00:00:00.000Z

Reasoning: High grade tantalum concentrate from waste material validates multi-element potential.

- Positive factor: High grade concentrate \(12,508 ppm\)

- Positive factor: Successful recovery from waste

Evidence · table

> 12508

Context: 0.52

#### Tags used in scoring

**Byproduct Commodity**

Polarity: neutral

Definition: The tested commodity is a byproduct rather than the primary economic driver.

Why it applies: the release describes a byproduct credit

### DMS

[Link to this fact](https://atlas-extractions.minestarters.com/news/high-grade-spodumene-and-tantalum-concentrates-confirmed-at-case-lake--7828b656-8517-4664-9a73-a5b483c0d501#fact-metallurgical-facts-3)

Case Lake · cesium

#### Identity

- Project: Case Lake
- Commodity: cesium
- Region: canada\_on
- Reported Region: Ontario, Canada
- Ticker: PWM

#### Test Work

- Program Status: detailed
- Test Type: DMS
- Processing Route: DMS
- Sample: DMS Concentrate

#### Recovery

- Head Grade: 1.58
- Head Grade Unit: %
- Conc. Grade: 0.88
- Conc. Grade Unit: %
- Mass Pull: 26.1 %

#### Lab

- Laboratory: Nagrom the Mineral Processor
- Consultant: SGS Lakefield

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-07-07T00:00:00.000Z

Reasoning: Presence of cesium in DMS concentrate suggests additional value stream.

- Positive factor: Potential byproduct credit

Evidence · table

> 0.88

Context: 26.1

#### Tags used in scoring

**Gravity Route**

Polarity: neutral

Definition: Gravity separation forms a material part of the flowsheet.

Why it applies: processing\_route matches the gravity signal

**Byproduct Commodity**

Polarity: neutral

Definition: The tested commodity is a byproduct rather than the primary economic driver.

Why it applies: the release describes a byproduct credit

## 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.