# WC1: Scandium Leach Testwork Delivers Promising Early Results Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/wc1-scandium-leach-testwork-delivers-promising-early-results--71d37788-e477-4a1e-b66e-d565b7c350ee Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03153715 Publisher: asx Original announcement: 2026-10-18T21:08:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-18T22:26:03.885Z Atlas analysis updated: 2026-10-18T22:26:03.885Z - Company: West Cobar Metals Limited - Ticker: WC1 - Exchange: ASX - Region: Western Australia - Primary commodity: Scandium - Secondary commodities: None reported - Document categories: Metallurgy - Extracted: 2026-10-18 22:26:04 UTC Narrative sentiment: 0.70 · Bullish ## Minestarters Atlas summary West Cobar Metals announced promising early results from sulfuric acid leach testwork on scandium mineralization at its Salazar Critical Minerals Project in Western Australia. The preliminary findings indicate that sulfuric acid is effective for scandium leaching and suggest that limiting leach time to six hours can significantly reduce aluminium dissolution while maintaining scandium extraction. This optimization potential is a positive step for developing an integrated processing flowsheet, though further work is required to confirm these results and assess variability. Reasoning: Early sulfuric acid leach testwork on Salazar scandium mineralization shows effective scandium extraction and a promising opportunity to significantly limit aluminium dissolution by optimizing leach times, which is a positive step for process development. However, the results are preliminary and based on a single composite. - Positive factor: effective\_scandium\_leaching - Positive factor: impurity\_reduction\_potential - Positive factor: process\_optimization\_identified - Negative factor: preliminary\_results - Negative factor: solids\_assays\_outstanding - Negative factor: single\_composite\_tested - Negative factor: representativeness\_not\_demonstrated Facts used in scoring: 3 ## Classification and evidence **Preliminary Testwork** Polarity: neutral Story-specific tag Definition: No canonical definition is currently available. Why it applies: The document describes the results as 'promising early results' and 'preliminary findings'. Evidence · text > SCANDIUM LEACH TESTWORK DELIVERS PROMISING EARLY RESULTS **Impurity Reduction Potential** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The testwork indicates potential to significantly limit aluminium dissolution through shorter leach times. Evidence · text > Results indicate potential to extract a constant amount of scandium while significantly limiting aluminium dissolution through shorter leach times \(up to 6 hours\) **Process Optimization Identified** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The findings suggest an opportunity to limit extended leach residence times to manage impurity dissolution. Evidence · text > This may indicate an opportunity to limit extended leach residence times, subject to confirmation through the broader test program. **Refractory Ore** Polarity: negative Definition: Ore requires oxidation/pressure treatment before recovery — a processing and recovery risk. Why it applies: Aluminium is identified as a major deleterious element that can impede downstream purification processes, suggesting processing complexity. Evidence · text > Aluminium is a major deleterious element in critical mineral leach liquors, its presence in high concentrations can impede downstream purification processes. **Bench Scale Only** Polarity: negative Definition: Only preliminary bench tests completed — no locked-cycle or pilot work. Why it applies: The testwork is described as 'preliminary sulfuric acid leach tests' and 'early time-based observations', without mention of locked-cycle or pilot plant scale. Evidence · text > Early time-based observations from current works **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: The results apply to a single selected composite, and representativeness of the wider deposit and metallurgical variability are not demonstrated. Evidence · text > Results apply to this selected composite from 3 drill holes; representativeness of the wider deposit and metallurgical variability are not demonstrated. **QP/CP Signed** Polarity: positive Story-specific tag Definition: 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: Mr Aaron Debono, a Fellow of the Australasian Institute of Mining and Metallurgy and Competent Person, has authorized the release. Evidence · text > Mr Aaron Debono, who is a full-time employee of NeoMet Engineering acting for West Cobar Metals Limited and a Fellow of the Australasian Institute of Mining and Metallurgy. Mr Debono has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Debono consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears. **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: the document describes a heap\_leach route \("heap leach"\) ## Extracted facts Stored fact records: 3. Some facts used in scoring do not have a stored record. ## Metallurgical Results (3) ### acid leach testwork [Link to this fact](https://atlas-staging.minestarters.com/news/wc1-scandium-leach-testwork-delivers-promising-early-results--71d37788-e477-4a1e-b66e-d565b7c350ee#fact-metallurgical-facts-0) Salazar Critical Minerals Project · scandium #### Identity - Project: Salazar Critical Minerals Project - Commodity: scandium - Region: australia\_wa - Reported Region: Western Australia - Ticker: WC1 #### Test Work - Program Status: preliminary - Test Type: acid leach testwork - Processing Route: sulfuric acid leaching - Sample: composite COMP09\_USAP\_Amph #### Recovery - Head Grade: 120 - Head Grade Unit: ppm #### Lab - Laboratory: ANSTO - Consultant: Aaron Debono, NeoMet Engineering #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-18T00:00:00.000Z Reasoning: Head grade for the composite used in preliminary leach testwork. - Negative factor: preliminary\_results - Negative factor: single\_composite\_tested Evidence · text > The ANSTO composite head assay is 120 ppm Sc ### acid leach testwork [Link to this fact](https://atlas-staging.minestarters.com/news/wc1-scandium-leach-testwork-delivers-promising-early-results--71d37788-e477-4a1e-b66e-d565b7c350ee#fact-metallurgical-facts-1) Salazar Critical Minerals Project · iron\_ore #### Identity - Project: Salazar Critical Minerals Project - Commodity: iron\_ore - Region: australia\_wa - Reported Region: Western Australia - Ticker: WC1 #### Test Work - Program Status: preliminary - Test Type: acid leach testwork - Processing Route: sulfuric acid leaching - Sample: composite COMP09\_USAP\_Amph #### Recovery - Head Grade: 15.5 - Head Grade Unit: % #### Lab - Laboratory: ANSTO - Consultant: Aaron Debono, NeoMet Engineering #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-18T00:00:00.000Z Reasoning: Head grade for the composite used in preliminary leach testwork. - Negative factor: preliminary\_results - Negative factor: single\_composite\_tested Evidence · text > 15.5% Fe ### acid leach testwork [Link to this fact](https://atlas-staging.minestarters.com/news/wc1-scandium-leach-testwork-delivers-promising-early-results--71d37788-e477-4a1e-b66e-d565b7c350ee#fact-metallurgical-facts-2) Salazar Critical Minerals Project · aluminium #### Identity - Project: Salazar Critical Minerals Project - Commodity: aluminium - Region: australia\_wa - Reported Region: Western Australia - Ticker: WC1 #### Test Work - Program Status: preliminary - Test Type: acid leach testwork - Processing Route: sulfuric acid leaching - Sample: composite COMP09\_USAP\_Amph #### Recovery - Head Grade: 10.7 - Head Grade Unit: % #### Lab - Laboratory: ANSTO - Consultant: Aaron Debono, NeoMet Engineering #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-18T00:00:00.000Z Reasoning: Head grade for the composite used in preliminary leach testwork. Aluminium is noted as a deleterious element. - Negative factor: preliminary\_results - Negative factor: single\_composite\_tested Evidence · text > 10.7% Al ## 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.