# Everest Metals hits 90pc rubidium recovery as pilot plans advance Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/everest-metals-hits-90pc-rubidium-recovery-as-pilot-plans-advance--069f0e71-6af2-4311-b104-c8a9d7806071 Original source: https://stockhead.com.au/resources/everest-metals-hits-90pc-rubidium-recovery-as-pilot-plans-advance/ Publisher: stockhead Original announcement: 2026-10-20T02:50:15.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-20T03:01:44.505Z Atlas analysis updated: 2026-10-20T03:01:44.505Z - Company: Everest Metals Corporation - Ticker: EMC - Exchange: Unavailable - Region: Western Australia - Primary commodity: Rubidium - Secondary commodities: Lithium - Document categories: Metallurgy, Resource update - Extracted: 2026-10-20 03:01:45 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Everest Metals has reported successful metallurgical bench testing at Mt Edon, achieving 80-90% rubidium recovery using its Direct Rubidium Extraction process. The company is now advancing toward pilot-plant development and refining its purification techniques to improve process efficiency. Reasoning: The document reports significant metallurgical progress in rubidium extraction and purification via a patent-pending process, alongside a summary of the existing resource. - Positive factor: High rubidium recovery \(80-90%\) achieved in batch trials - Positive factor: Process optimization reduced liquid-to-solids ratio from 10:1 to 4:1 - Positive factor: Leaching achieved at room temperature reducing energy requirements - Positive factor: Demonstrated ability to reduce potassium-to-rubidium ratio to 1.5-2:1 - Negative factor: Rotary-kiln trials showed lower recovery \(50-60%\) due to material flow issues - Negative factor: Final rubidium purity is subject to further validation Facts used in scoring: 4 ## Classification and evidence **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The process involves leaching and purification circuits. Evidence · text > aiming to translate laboratory success into a repeatable, larger-scale operation. **POX/BIOX Route** Polarity: neutral Definition: Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX. Why it applies: the document describes a pox\_biox route \("roasting"\) **Multi-Domain Tested** Polarity: positive Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed. Why it applies: 2 distinct composites were tested ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Resource Estimates (2) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/everest-metals-hits-90pc-rubidium-recovery-as-pilot-plans-advance--069f0e71-6af2-4311-b104-c8a9d7806071#fact-resource-facts-2) Mt Edon · rubidium #### Identity - Project: Mt Edon - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: EMC #### Resource scope - Estimate type: resource - Resource group id: resource:5fec6fd4896be42b4d61 - Deposit or zone: Mt Edon #### Resource Data - Category: indicated - Tonnes: 4300000 - Grade: 0.23 - Grade Unit: % - Contained Metal: 9800 - Contained Unit: t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Provides the baseline resource for the metallurgical development. - Positive factor: Established mineral inventory Evidence · text > Mt Edon... hosts an Indicated and Inferred resource of 4.3Mt at 0.23% rubidium oxide and 0.10% lithium oxide. #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No QP/CP Disclosure** Polarity: negative Definition: 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 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/everest-metals-hits-90pc-rubidium-recovery-as-pilot-plans-advance--069f0e71-6af2-4311-b104-c8a9d7806071#fact-resource-facts-3) Mt Edon · lithium #### Identity - Project: Mt Edon - Commodity: lithium - Region: australia\_wa - Reported Region: Western Australia - Ticker: EMC #### Resource scope - Estimate type: resource - Resource group id: resource:5fec6fd4896be42b4d61 - Deposit or zone: Mt Edon #### Resource Data - Category: indicated - Tonnes: 4300000 - Grade: 0.1 - Grade Unit: % #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Secondary commodity in the resource estimate. Evidence · text > 4.3Mt at 0.23% rubidium oxide and 0.10% lithium oxide. #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **No QP/CP Disclosure** Polarity: negative Definition: 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) ### batch roasting and leaching [Link to this fact](https://atlas-staging.minestarters.com/news/everest-metals-hits-90pc-rubidium-recovery-as-pilot-plans-advance--069f0e71-6af2-4311-b104-c8a9d7806071#fact-metallurgical-facts-0) Mt Edon · rubidium #### Identity - Project: Mt Edon - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: EMC #### Test Work - Program Status: preliminary - Test Type: batch roasting and leaching - Sample: Batch roasting and leaching trials using representative Mt Edon material #### Recovery - Recovery: 90 % - Recovery Basis: actual\_test #### Lab - Laboratory: Edith Cowan University’s Mineral Recovery Research Centre #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: High recovery rate for a critical mineral in bench-scale trials. - Positive factor: Achieved 80-90% extraction efficiency Evidence · text > Batch roasting and leaching trials using representative Mt Edon material delivered rubidium extraction efficiencies of about 80–90% #### Tags used in scoring **POX/BIOX Route** Polarity: neutral Definition: Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX. Why it applies: processing\_route matches the pox\_biox signal ### rotary-kiln trials [Link to this fact](https://atlas-staging.minestarters.com/news/everest-metals-hits-90pc-rubidium-recovery-as-pilot-plans-advance--069f0e71-6af2-4311-b104-c8a9d7806071#fact-metallurgical-facts-1) Mt Edon · rubidium #### Identity - Project: Mt Edon - Commodity: rubidium - Region: australia\_wa - Reported Region: Western Australia - Ticker: EMC #### Test Work - Program Status: preliminary - Test Type: rotary-kiln trials - Sample: Initial rotary-kiln trials processing about 60kg of ore #### Recovery - Recovery: 55 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Lower recovery in kiln trials highlights technical challenges in scaling the process. - Negative factor: Lower recovery \(50-60%\) compared to batch leaching - Negative factor: Variability linked to molten salts restricting material flow Evidence · text > Initial rotary-kiln trials processing about 60kg of ore and reagents achieved 50–60% 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.