Resouro Strategic Metals Inc. (RSGOF) Metallurgical Testwork & PEA Update - Tiros Project
Original announcement by tmx on
- Company
- Resouro Strategic Metals Inc.
- Ticker
- RSM
- Exchange
- TSX
- Region
- Minas Gerais, Brazil
- Primary commodity
- Titanium
- Secondary commodities
- Rare earths
- Document categories
- Metallurgy, Economic study
- Extracted
- 2026-09-18 18:48:19 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Resouro Strategic Metals Inc. reported high recovery results from metallurgical testwork at the Tiros Project, achieving up to 95.2% TREO and 94.2% TiO2 extraction using a fine particle sulphuric acid leach. The company is currently optimizing beneficiation to reduce high sulphuric acid consumption and is advancing its Preliminary Economic Assessment (PEA), though the PEA may be paused pending further optimization.
Reasoning: The announcement provides significant metallurgical progress with high recovery rates for both TiO2 and TREO, though high acid consumption and the potential delay of the PEA introduce technical and timeline risks.
Positive factors
- High TREO extraction (up to 95.2%)
- High TiO2 recovery (up to 94.2%) in fine particle flowsheet
- Encouraging beneficiation testwork results
- Advancing PEA and permitting
Negative factors
- High sulphuric acid consumption (up to 1,320 kg/t)
- PEA potentially being placed on hold
- Processing costs not yet finalized
Facts used in scoring: 5
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The flowsheet involves fine particle processing (< 20 micron) and sulphuric acid leaching.
Evidence · text
“Fine particle flow sheet (< 20 micron) using sulphuric acid”
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: TREO stage extraction reached up to 95.2% and TiO2 stage recovery reached up to 94.2% in fine particle flowsheet.
Evidence · text
“88.8% to 95.2% stage extraction of TREO; and - 71.2% to 94.2% of TiO2 stage recovery”
PEA Onlyneutral
Only Class 4 / Initial Assessment economics available. Not bankable.
Why it applies: The document discusses the advancement of a Preliminary Economic Assessment (PEA).
Evidence · text
“advancement of the Preliminary Economic Assessment ("PEA")”
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)
sulphuric acid leachTiros Project · rare_earthsRecovery: 95.2 %View all detailsHide details
Identity
- Project
- Tiros Project
- Commodity
- rare_earths
- Region
- brazil
- Reported Region
- Minas Gerais, Brazil
- Ticker
- RSM
Test Work
- Program Status
- optimization
- Test Type
- sulphuric acid leach
- Processing Route
- Fine particle flow sheet (< 20 micron) using sulphuric acid
- Sample
- Fine particle flow sheet (< 20 micron) using sulphuric acid
Recovery
- Recovery
- 95.2 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS Lakefield and CIT Senai and SGS Geosol
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Excellent recovery rates for both primary and secondary commodities in the fine particle flowsheet.
Positive factors
- High extraction rates
Evidence · text
“88.8% to 95.2% stage extraction of TREO”
sulphuric acid leachTiros Project · titaniumRecovery: 94.2 %View all detailsHide details
Identity
- Project
- Tiros Project
- Commodity
- titanium
- Region
- brazil
- Reported Region
- Minas Gerais, Brazil
- Ticker
- RSM
Test Work
- Program Status
- optimization
- Test Type
- sulphuric acid leach
- Processing Route
- Fine particle flow sheet (< 20 micron) using sulphuric acid
- Sample
- Fine particle flow sheet (< 20 micron) using sulphuric acid
Recovery
- Recovery
- 94.2 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS Lakefield and CIT Senai and SGS Geosol
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: High recovery for TiO2 in the fine particle flowsheet.
Positive factors
- High recovery rates
Evidence · text
“71.2% to 94.2% of TiO2 stage recovery”
conventional flowsheetTiros Project · titaniumRecovery: 39 %View all detailsHide details
Identity
- Project
- Tiros Project
- Commodity
- titanium
- Region
- brazil
- Reported Region
- Minas Gerais, Brazil
- Ticker
- RSM
Test Work
- Program Status
- optimization
- Test Type
- conventional flowsheet
- Processing Route
- Coarse particle flow sheet (>75 micron) using conventional flowsheet
- Sample
- Coarse particle flow sheet (>75 micron) using conventional flowsheet
Recovery
- Recovery
- 39 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS Lakefield and CIT Senai and SGS Geosol
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: Coarse particle flowsheet shows significantly lower TiO2 recovery compared to fine particle flowsheet.
Negative factors
- Low recovery
Evidence · text
“TiO2 stage recovery of coarse feed 39%”
Fact 4Tiros Project · titaniumView all detailsHide details
Identity
- Project
- Tiros Project
- Commodity
- titanium
- Region
- brazil
- Reported Region
- Minas Gerais, Brazil
- Ticker
- RSM
Test Work
- Sample
- raw sample minus 20 micron fraction
Reagents
- Acid
- 1320 kg/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-02T00:00:00.000Z
Reasoning: High acid consumption levels reported for the raw sample.
Negative factors
- High acid consumption
Evidence · text
“Preliminary sulphuric acid consumption ranged from 700kg/t to 1,320kg/t”
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.