# Mineral Resource Estimate Updated for the Cowboy State Mine Area at Halleck Creek Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/mineral-resource-estimate-updated-for-the-cowboy-state-mine-area-at-halleck-cree--a59a5bdd-6d30-416e-9a04-7af7f461999c Original source: https://finance.yahoo.com/news/mineral-estimate-updated-cowboy-state-130300699.html Publisher: yahoo\_press Original announcement: 2025-11-19T13:03:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-21T14:51:59.999Z Atlas analysis updated: 2026-09-21T14:51:59.999Z - Company: Unavailable - Ticker: ARR - Exchange: ASX - Region: Unavailable - Primary commodity: Rare earth - Secondary commodities: None reported - Document categories: Resource update - Extracted: 2026-09-21 14:52:00 UTC Narrative sentiment: 0.40 · Bullish ## Minestarters Atlas summary An updated Mineral Resource Estimate for the Cowboy State Mine \(CSM\) area has been released, reclassifying 68.4 million tonnes into the Indicated category. The update was supported by 102 channel samples collected in 2025, with standout samples showing high TREO grades. Reasoning: The update reclassifies 68.4 Mt into the Indicated category using new 2025 channel sample data, representing a significant update to the geological model. - Positive factor: Resource reclassification - Positive factor: New data points from channel sampling Facts used in scoring: 2 ## Classification and evidence **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document announces an updated Mineral Resource Estimate for the CSM area. Evidence · text > Updated Mineral Resource Estimate in the Cowboy State Mine ## Extracted facts Stored fact records: 2. 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/mineral-resource-estimate-updated-for-the-cowboy-state-mine-area-at-halleck-cree--a59a5bdd-6d30-416e-9a04-7af7f461999c#fact-resource-facts-0) rare earth #### Identity - Commodity: rare earth - Ticker: ARR #### Resource scope - Estimate type: resource - Resource group id: resource:ab4650e45d7b8e64edd5 #### Resource Data - Category: indicated - Tonnes: 68400000 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-11-19T00:00:00.000Z Reasoning: 68.4 Mt reclassified into Indicated category based on new 2025 data. - Positive factor: Resource reclassification Evidence · text > reclassifies indicated resource by 68.4 million tonnes #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ### Fact 2 [Link to this fact](https://atlas-staging.minestarters.com/news/mineral-resource-estimate-updated-for-the-cowboy-state-mine-area-at-halleck-cree--a59a5bdd-6d30-416e-9a04-7af7f461999c#fact-resource-facts-1) rare earth #### Identity - Commodity: rare earth - Ticker: ARR #### Resource Data - Grade: 5471 - Grade Unit: ppm TREO #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-11-19T00:00:00.000Z Reasoning: Channel samples returned high average TREO values of 5,471 ppm. - Positive factor: High grade channel samples Evidence · text > 18 Channel samples returned average values of 5,471 ppm Total Rare Earth Oxides \(TREO\) #### Tags used in scoring **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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate ## 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.