St George Mining starts pilot-scale test work to advance Araxá niobium and rare earths flowsheet in Brazil
Original announcement by proactiveinvestors on
- Company
- St George Mining Ltd
- Ticker
- SGQ
- Exchange
- Unavailable
- Region
- Minas Gerais, Brazil
- Primary commodity
- Niobium
- Secondary commodities
- Rare earths
- Document categories
- Metallurgy, Resource update, Permitting
- Extracted
- 2026-09-02 00:48:31 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
St George Mining has commenced pilot-scale beneficiation test work at the Araxá project in Brazil, targeting niobium and rare earth products. The program uses nine tonnes of saprolite material and aims to optimize a flowsheet involving grinding, magnetic separation, and flotation. The company is also constructing its own large-scale pilot plant at the Araxá campus, scheduled for completion in December 2026.
Reasoning: The company is advancing from bench-scale to pilot-scale testing for a significant niobium and rare earth resource, representing a key de-risking milestone.
Positive factors
- Pilot-scale testing underway
- Established infrastructure and proximity to major producer
- Strong historical recovery results mentioned
- Environmental permitting has commenced
Negative factors
- Pilot plant completion not until late 2026
Facts used in scoring: 6
Classification and evidence
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: The company is starting pilot-scale beneficiation test work using nine tonnes of material.
Evidence · text
“has started pilot plant beneficiation test work”
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The document provides updated resource figures for the Araxá project.
Evidence · text
“The project hosts a JORC mineral resource of 111.2 million tonnes”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Metallurgical Results (6)
flotationniobiumRecovery: 86 %Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- niobium
- Ticker
- SGQ
Test Work
- Program Status
- detailed
- Test Type
- flotation
- Processing Route
- grinding, magnetic separation and flotation
- Sample
- near-surface saprolite material
Recovery
- Recovery
- 86 %
- Recovery Basis
- actual_test
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Historical recovery of 86% TREO mentioned as a benchmark for the current pilot program.
Positive factors
- High recovery achieved in previous work
Evidence · text
“achieved overall total rare earth oxide recovery of 86%”
flotationrare_earthsRecovery: 86 %Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- rare_earths
- Ticker
- SGQ
Test Work
- Program Status
- detailed
- Test Type
- flotation
- Processing Route
- grinding, magnetic separation and flotation
- Sample
- near-surface saprolite material
Recovery
- Recovery
- 86 %
- Recovery Basis
- actual_test
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Historical recovery of 86% TREO mentioned as a benchmark for the current pilot program.
Positive factors
- High purity achieved in previous work
Evidence · text
“achieved overall total rare earth oxide recovery of 86%”
Fact 3niobiumView all detailsHide details
Identity
- Commodity
- niobium
- Ticker
- SGQ
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Part of the measured and indicated resource component.
Positive factors
- Significant contained metal
Evidence · text
“75.2 million tonnes sits in the measured and indicated categories at 3.64% TREO and 0.58% Nb2O5”
Fact 4rare_earthsView all detailsHide details
Identity
- Commodity
- rare_earths
- Ticker
- SGQ
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Part of the measured and indicated resource component.
Positive factors
- Significant contained metal
Evidence · text
“75.2 million tonnes sits in the measured and indicated categories at 3.64% TREO and 0.58% Nb2O5”
Fact 5niobiumView all detailsHide details
Identity
- Commodity
- niobium
- Ticker
- SGQ
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Residual portion of the total resource.
Negative factors
- Inferred category
Evidence · text
“hosts a JORC mineral resource of 111.2 million tonnes at 3.57% TREO and 0.57% Nb2O5”
Fact 6rare_earthsView all detailsHide details
Identity
- Commodity
- rare_earths
- Ticker
- SGQ
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Residual portion of the total resource.
Negative factors
- Inferred category
Evidence · text
“hosts a JORC mineral resource of 111.2 million tonnes at 3.57% TREO and 0.57% Nb2O5”
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.