HIGH-GRADE SPODUMENE AND TANTALUM CONCENTRATES CONFIRMED AT CASE LAKE
Original announcement by tmx on
- 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
Analysis by Minestarters Atlas
Minestarters Atlas analysis
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 factors
- High-grade spodumene concentrate (7.20% Li2O)
- High flotation recovery (99.50%)
- Low iron impurities (0.66%)
- Successful tantalum recovery (12,508 ppm)
- Demonstrated multi-element potential (Li, Ta, Cs)
Facts used in scoring: 4
Classification and evidence
High Recoverypositive
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 Routeneutral
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 Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
Multi-Domain Testedpositive
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)
flotationCase Lake · lithiumRecovery: 78.8 %Head Grade: 1.58Head Grade Unit: %View all detailsHide details
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 factors
- High grade concentrate (7.20%)
- Low iron impurities
Evidence · table
“7.20”
Context: 17.8
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
DMSCase Lake · lithiumRecovery: 85.82 %Head Grade: 1.58Head Grade Unit: %View all detailsHide details
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 factors
- Solid recovery (85.82%)
- Acceptable grade (5.24%)
Evidence · table
“5.24”
Context: 26.1
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
High Recoverypositive
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 Commodityneutral
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 separationCase Lake · tantalumRecovery: 44.8 %Head Grade: 144Head Grade Unit: ppmView all detailsHide details
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 factors
- High grade concentrate (12,508 ppm)
- Successful recovery from waste
Evidence · table
“12508”
Context: 0.52
Tags used in scoring
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
DMSCase Lake · cesiumHead Grade: 1.58Head Grade Unit: %View all detailsHide details
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 factors
- Potential byproduct credit
Evidence · table
“0.88”
Context: 26.1
Tags used in scoring
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Byproduct Commodityneutral
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.