Mount Ridley trumpets world’s largest scandium resource
Original announcement by stockhead on
- Company
- Mount Ridley Mines
- Ticker
- MRD
- Exchange
- Unavailable
- Region
- Western Australia
- Primary commodity
- Scandium
- Secondary commodities
- Rare earths, Gallium
- Document categories
- Resource update, Metallurgy
- Extracted
- 2026-08-26 01:02:34 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Mount Ridley Mines has expanded its Grass Patch scandium resource to 946Mt at 50.1ppm, representing a significant increase in scale. The company is also developing a proprietary 'Selectro' hydrometallurgical process which showed 80% scandium recovery in initial laboratory testing.
Reasoning: The announcement reports a massive expansion of the scandium resource (946Mt) and introduces promising preliminary metallurgical results, though the resource remains in the speculative Inferred category.
Positive factors
- Significant tonnage growth (>2.5x)
- World-scale scandium resource
- Proprietary processing technology (Selectro)
- Co-location of multiple critical minerals
Negative factors
- Resource is entirely Inferred category
- Metallurgical recovery is based on small-scale historical composite
- Commercial pathway for Selectro process is unproven at scale
Facts used in scoring: 4
Classification and evidence
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The entire 946Mt scandium resource is classified as Inferred.
Evidence · text
“lifted its inferred scandium mineral resource estimate to 946Mt”
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: The resource is stated to be JORC-compliant.
Evidence · text
“world’s largest publicly reported JORC-compliant scandium resource”
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Resource Estimates (4)
inferredGrass Patch · scandiumTonnes: 946000000Grade: 50.1Grade Unit: ppmContained Metal: 47357Contained Unit: tView all detailsHide details
Identity
- Project
- Grass Patch
- Commodity
- scandium
- Ticker
- MRD
Resource Data
- Category
- inferred
- Tonnes
- 946000000
- Grade
- 50.1
- Grade Unit
- ppm
- Contained Metal
- 47357
- Contained Unit
- t
- Cutoff Grade
- 25
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-26T00:00:00.000Z
Reasoning: The resource represents a massive scale-up in tonnage and is a world-class scandium deposit, though geological confidence is limited to the Inferred category.
Positive factors
- Massive scale increase
- High grade for scandium
Negative factors
- 100% Inferred category
Evidence · text
“lifted its inferred scandium mineral resource estimate to 946Mt at 50.1ppm scandium, containing 47,357t of scandium metal, at a 25ppm cut-off”
Fact 2scandiumView all detailsHide details
Identity
- Commodity
- scandium
- Ticker
- MRD
Lab
- Laboratory
- Nagrom
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-26T00:00:00.000Z
Reasoning: 80% recovery is a strong initial signal for the proprietary process, but the test scale is very low (bench/lab scale).
Positive factors
- Strong recovery for scandium
Negative factors
- Small sample size (16.8kg)
- Based on historical holes
Evidence · text
“Initial independent laboratory work at Nagrom on a 16.8kg composite from five historical diamond holes delivered 80% scandium recovery”
Fact 3rare_earthsView all detailsHide details
Identity
- Commodity
- rare_earths
- Ticker
- MRD
Lab
- Laboratory
- Nagrom
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-26T00:00:00.000Z
Reasoning: Recoveries of 77-83% for heavy rare earths are promising for a single-circuit process.
Positive factors
- Acceptable recovery range
Evidence · text
“alongside roughly 77-83% recoveries for the principal heavy rare earths tested”
Fact 4galliumView all detailsHide details
Identity
- Commodity
- gallium
- Ticker
- MRD
Lab
- Laboratory
- Nagrom
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-26T00:00:00.000Z
Reasoning: 56% recovery for gallium is significantly lower than the scandium and REE recoveries.
Negative factors
- Relatively low recovery compared to scandium
Evidence · text
“and about 56% gallium recovery”
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.