St George tests new tech on Brazil niobium, rare earths
Original announcement by miningbeacon on
- Company
- St George Mining
- Ticker
- ASX: STG
- Exchange
- Unavailable
- Region
- Brazil
- Primary commodity
- Niobium
- Secondary commodities
- Rare earth metals
- Document categories
- Metallurgy, Resource update, Agreement transaction
- Extracted
- 2026-09-12 03:51:59 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
St George Mining has entered agreements to trial Boston Metal's Molten Oxide Electrolysis technology for niobium and Tecnicas Reunidas' RARETECH for rare earths at its Araxa project in Brazil. The company is leveraging these partnerships to develop downstream processing strategies for its maiden niobium and rare earth resource.
Reasoning: St George is advancing its Araxa project through high-profile technology trials (Boston Metal and Tecnicas Reunidas) to de-risk downstream processing for its significant niobium and rare earth resource.
Positive factors
- strategic technology partnerships
- large-scale resource scale
- downstream processing focus
Facts used in scoring: 4
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Resource Estimates (2)
inferredAraxa · niobiumTonnes: 41200000Grade: 0.68Grade Unit: %View all detailsHide details
Identity
- Project
- Araxa
- Commodity
- niobium
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ASX: STG
Resource scope
- Estimate type
- resource
- Resource group id
- resource:76d1654dcc2849df7a1c
Resource Data
- Category
- inferred
- Tonnes
- 41200000
- Grade
- 0.68
- Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-01T00:00:00.000Z
Reasoning: Maiden niobium resource reported at Araxa.
Positive factors
- maiden resource
Evidence · text
“41.2 million tonnes grading 0.68% niobium pentoxide”
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
inferredAraxa · rare earth metalsTonnes: 40600000Grade: 4.13Grade Unit: %View all detailsHide details
Identity
- Project
- Araxa
- Commodity
- rare earth metals
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ASX: STG
Resource scope
- Estimate type
- resource
- Resource group id
- resource:d99deb8d3421ce8a4f49
Resource Data
- Category
- inferred
- Tonnes
- 40600000
- Grade
- 4.13
- Grade Unit
- %
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-01T00:00:00.000Z
Reasoning: Maiden rare earth resource reported at Araxa.
Positive factors
- maiden resource
Evidence · text
“40.6Mt at 4.13% total rare earth oxide”
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
Metallurgical Results (2)
Molten Oxide ElectrolysisAraxa · niobiumView all detailsHide details
Identity
- Project
- Araxa
- Commodity
- niobium
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ASX: STG
Test Work
- Program Status
- preliminary
- Test Type
- Molten Oxide Electrolysis
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-01T00:00:00.000Z
Reasoning: Trialing novel MOE technology for niobium production efficiencies.
Positive factors
- advanced technology trial
Negative factors
- unproven at scale for this specific project
Evidence · text
“assess Boston Metal’s Molten Oxide Electrolysis technology on niobium”
RARETECHAraxa · rare earth metalsView all detailsHide details
Identity
- Project
- Araxa
- Commodity
- rare earth metals
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ASX: STG
Test Work
- Program Status
- preliminary
- Test Type
- RARETECH
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-01T00:00:00.000Z
Reasoning: Testing RARETECH technology for rare earth processing.
Positive factors
- specialized technology trial
Evidence · text
“test the suitability of the Spanish engineering group’s RARETECH rare earths technology”
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.