Electric Metals Ore Sorting Assessment Indicates Potential to More Than Double Emily Manganese Feed Grade While Recovering 92% of Contained Manganese
Original announcement by tmx on
- Company
- Electric Metals (USA) Limited
- Ticker
- EML
- Exchange
- TSX
- Region
- Minnesota
- Primary commodity
- Manganese
- Secondary commodities
- Iron ore
- Document categories
- Metallurgy
- Extracted
- 2026-09-19 18:47:35 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Electric Metals reported positive results from a simulated ore sorting assessment at the Emily Manganese Deposit. The simulation showed that a drill core dataset averaging 8.2% Mn could be upgraded to 17.5% Mn while recovering 92% of the manganese and rejecting 57% of the material.
Reasoning: The assessment demonstrates high potential for grade upgrading and waste rejection via ore sorting, though it remains a simulation-based study requiring physical validation.
Positive factors
- Significant grade upgrade potential (8.2% to 17.5% Mn)
- High manganese recovery (92%)
- Substantial waste rejection (57%)
- Strong correlation between XRF and lab assays (R² > 0.97)
Negative factors
- Results are based on numerical simulations, not physical sorting trials
- Ongoing legal proceeding regarding historical royalty/mining arrangements
Facts used in scoring: 3
Classification and evidence
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: The results are based on numerical simulations of XRF data rather than physical ore sorting trials.
Evidence · text
“While the reported sorting results are based on numerical simulations calibrated against laboratory assays rather than physical sorting trials”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The study discusses upgrading feed for downstream processing (crushing, grinding, leaching).
Evidence · text
“reducing downstream processing costs, improving project economics”
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: 3. Some facts used in scoring do not have a stored record.
Metallurgical Results (3)
numerical simulationNorth Star Manganese Project · manganeseRecovery: 92 %Head Grade: 8.2Head Grade Unit: %View all detailsHide details
Identity
- Project
- North Star Manganese Project
- Commodity
- manganese
- Region
- minnesota
- Reported Region
- Minnesota
- Ticker
- EML
Test Work
- Program Status
- preliminary
- Test Type
- numerical simulation
- Sample
- particle-scale simulated sorting of drill core dataset
Recovery
- Recovery
- 92 %
- Head Grade
- 8.2
- Head Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Strong simulated performance for upgrading feed grade.
Positive factors
- High recovery of 92% maintained during grade upgrade
Negative factors
- Simulation-based, not physical
Evidence · text
“upgraded a drill core dataset, averaging approximately 8.2% Mn, to approximately 17.5% Mn while recovering approximately 92% of the contained manganese”
numerical simulationNorth Star Manganese Project · manganeseRecovery: 92 %Head Grade: 8.2Head Grade Unit: %View all detailsHide details
Identity
- Project
- North Star Manganese Project
- Commodity
- manganese
- Region
- minnesota
- Reported Region
- Minnesota
- Ticker
- EML
Test Work
- Program Status
- preliminary
- Test Type
- numerical simulation
- Sample
- bulk ore sorting simulated scenario
Recovery
- Recovery
- 92 %
- Head Grade
- 8.2
- Head Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Bulk sorting shows lower upgrade potential than particle sorting but still significant.
Positive factors
- Maintains 92% recovery
Evidence · text
“Simulated bulk ore sorting upgraded a drill core dataset averaging approximately 8.2% Mn to approximately 13.1% Mn while recovering approximately 92% of contained manganese”
numerical simulationNorth Star Manganese Project · iron_oreView all detailsHide details
Identity
- Project
- North Star Manganese Project
- Commodity
- iron_ore
- Region
- minnesota
- Reported Region
- Minnesota
- Ticker
- EML
Test Work
- Program Status
- preliminary
- Test Type
- numerical simulation
- Sample
- simulated sorting scenarios at higher manganese thresholds
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-30T00:00:00.000Z
Reasoning: Rejection of iron-bearing material noted as a benefit.
Positive factors
- Potential for downstream metallurgical benefits via iron rejection
Evidence · text
“Progressive rejection of iron-bearing material was observed in simulated sorting scenarios at higher manganese thresholds”
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.