RDM: Sybella Six Metre Columns Leach Tests Underway
Original announcement by asx on
- Company
- Red Metal Limited
- Ticker
- RDM
- Exchange
- ASX
- Region
- Unavailable
- Primary commodity
- Rare earths
- Secondary commodities
- Neodymium, Praseodymium
- Document categories
- Metallurgy, Other
- Extracted
- 2026-10-21 00:10:56 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Red Metal Limited has commenced large-diameter, six-metre tall column leach tests on Saprock and Transitional ore from the Sybella Kary Zone. These tests aim to simulate full-scale commercial heap conditions to de-risk future Definitive Feasibility Study (DFS) design assumptions. Parallel tests are also underway using a coarser -30mm crush size to evaluate potential cost reductions.
Reasoning: The commencement of larger-scale column leach tests is a significant de-risking milestone for the upcoming DFS, moving from lab-scale to more realistic heap simulations.
Positive factors
- Scaling up to larger 6m columns provides more representative simulation of commercial heap
- Testing coarser crush sizes to potentially lower OPEX and CAPEX
- Building on previous successful 2m column leach results
Facts used in scoring: 2
Classification and evidence
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: The current 6m tests are scaling up from previous 2m tests, but are still column-scale rather than full-scale heap leach plant tests.
Evidence · text
“The program is designed to bridge the gap between laboratory-scale testing and full-scale heap leaching”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: the document describes a heap_leach route ("heap leach")
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Metallurgical Results (2)
Fact 1neodymiumRecovery: 76 %Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- neodymium
- Ticker
- RDM
Test Work
- Sample
- Transitional ore from 2m column leach test (reported 18 June 2026)
Recovery
- Recovery
- 76 %
- Recovery Basis
- actual_test
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2026-06-18T00:00:00.000Z
Dates
- Event date
- 2026-10-20T00:00:00.000Z
Reasoning: Historical result reported for comparison; shows strong recovery for neodymium.
Positive factors
- Strong extraction result of 76%
Evidence · text
“Neodymium extraction of up to 76%”
Fact 2praseodymiumRecovery: 78 %Historical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- praseodymium
- Ticker
- RDM
Test Work
- Sample
- Transitional ore from 2m column leach test (reported 18 June 2026)
Recovery
- Recovery
- 78 %
- Recovery Basis
- actual_test
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2026-06-18T00:00:00.000Z
Dates
- Event date
- 2026-10-20T00:00:00.000Z
Reasoning: Historical result reported for comparison; shows strong recovery for praseodymium.
Positive factors
- Strong extraction result of 78%
Evidence · text
“Praseodymium extraction of up to 78%”
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.