# Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0 Original source: https://money.tmx.com/en/quote/ALDE/news/7644317711461551/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th Publisher: tmx Original announcement: 2026-03-02T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Aldebaran Resources Inc. - Ticker: ALDE - Exchange: TSX - Region: Salta, Argentina - Primary commodity: Gold - Secondary commodities: Copper, Silver - Document categories: Resource update - Extracted: 2026-08-21 01:39:18 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Aldebaran and Centauri have announced an updated Mineral Resource Estimate for the Rio Grande gold-copper project in Argentina. The estimate includes 1.45 million ounces of gold and 384,000 tonnes of copper in Indicated resources, and 1.55 million ounces of gold in Inferred resources. Reasoning: The update provides a substantial mineral resource inventory for the Rio Grande project, though it relies on historical data without recent drilling to upgrade confidence. - Positive factor: Significant contained metal inventory - Positive factor: NI 43-101 compliant - Positive factor: QP signed off - Positive factor: Open exploration potential - Negative factor: Stale data \(no new drilling since 2013\) - Negative factor: High proportion of Inferred resources - Negative factor: Low grade/tonnage profile Facts used in scoring: 24 ## Classification and evidence **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The Mineral Resource Estimate was prepared to comply with NI 43-101 standards by SLR Consulting. Evidence · text > complete a National Instrument \(“NI”\) 43-101 Technical Report and Mineral Resource Estimate update **QP/CP Signed** Polarity: positive 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. Benjamin Sanfurgo, an independent qualified person, has reviewed and approved the technical information. Evidence · text > Mr. Sanfurgo is an independent qualified person \(“QP”\) as defined by NI 43-101. **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: A significant portion of the resource \(220.8 Mt\) is classified as Inferred. Evidence · text > Inferred Resources containing 1.55 million ounces of gold **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The report discloses NSR cut-off grades for oxide, transitional, and sulphide material. Evidence · text > Mineral Resources are estimated at a net smelter return \(NSR\) cut-off grade of US$10.25/t for oxide. ## Extracted facts Stored fact records: 24. Some facts used in scoring do not have a stored record. ## Resource Estimates (24) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-0) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 94100000 - Grade: 0.26 - Grade Unit: g/t - Contained Metal: 781 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated oxide gold grade is 0.26 g/t. - Negative factor: Low grade Evidence · table > 0.26 Context: 94.1 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-1) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 94100000 - Grade: 0.2 - Grade Unit: % - Contained Metal: 188 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated oxide copper grade is 0.20%. Evidence · table > 0.20 Context: 94.1 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-2) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 94100000 - Grade: 6.3 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated oxide silver grade is 2.1 g/t. Evidence · table > 6.3 Context: 94.1 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-3) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 47300000 - Grade: 0.34 - Grade Unit: g/t - Contained Metal: 523 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated transitional gold grade is 0.34 g/t. Evidence · table > 0.34 Context: 47.3 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-4) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 47300000 - Grade: 0.33 - Grade Unit: % - Contained Metal: 156 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated transitional copper grade is 0.33%. Evidence · table > 0.33 Context: 47.3 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-5) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 47300000 - Grade: 5.5 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated transitional silver grade is 3.6 g/t. Evidence · table > 5.5 Context: 47.3 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-6) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 12300000 - Grade: 0.36 - Grade Unit: g/t - Contained Metal: 144 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated sulphide gold grade is 0.36 g/t. Evidence · table > 0.36 Context: 12.3 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-7) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 12300000 - Grade: 0.29 - Grade Unit: % - Contained Metal: 36 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated sulphide copper grade is 0.29%. Evidence · table > 0.29 Context: 12.3 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-8) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 12300000 - Grade: 0.9 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated sulphide silver grade is 2.3 g/t. Evidence · table > 0.9 Context: 12.3 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-9) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 144500000 - Grade: 0.19 - Grade Unit: g/t - Contained Metal: 898 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred oxide gold grade is 0.19 g/t. - Negative factor: Low grade - Negative factor: Inferred category Evidence · table > 0.19 Context: 144.5 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-10) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 144500000 - Grade: 0.16 - Grade Unit: % - Contained Metal: 231 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred oxide copper grade is 0.16%. Evidence · table > 0.16 Context: 144.5 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-11) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 144500000 - Grade: 10.3 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred oxide silver grade is 2.2 g/t. Evidence · table > 10.3 Context: 144.5 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-12) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 75600000 - Grade: 0.26 - Grade Unit: g/t - Contained Metal: 643 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred transitional gold grade is 0.26 g/t. Evidence · table > 0.26 Context: 75.6 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-13) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 75600000 - Grade: 0.24 - Grade Unit: % - Contained Metal: 181 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred transitional copper grade is 0.24%. Evidence · table > 0.24 Context: 75.6 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-14) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 75600000 - Grade: 7.4 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred transitional silver grade is 3.0 g/t. Evidence · table > 7.4 Context: 75.6 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-15) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 0.25 - Grade Unit: g/t - Contained Metal: 6 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred sulphide gold grade is 0.25 g/t. Evidence · table > 0.25 Context: 0.7 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-16) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 0.24 - Grade Unit: % - Contained Metal: 2 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred sulphide copper grade is 0.24%. Evidence · table > 0.24 Context: 0.7 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-17) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 700000 - Grade: 0.1 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred sulphide silver grade is 4.1 g/t. Evidence · table > 0.1 Context: 0.7 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-18) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 153700000 - Grade: 0.29 - Grade Unit: g/t - Contained Metal: 1448 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated oxide gold grade is 0.26 g/t. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Low grade Evidence · table > 0.29 Context: 153.7 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-19) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 153700000 - Grade: 0.25 - Grade Unit: % - Contained Metal: 384 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated oxide gold grade is 0.26 g/t. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Low grade Evidence · table > 0.25 Context: 153.7 ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-20) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: indicated - Tonnes: 153700000 - Grade: 12.7 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Indicated oxide gold grade is 0.26 g/t. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Low grade Evidence · table > 12.7 Context: 153.7 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-21) gold #### Identity - Commodity: gold - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 220800000 - Grade: 0.22 - Grade Unit: g/t - Contained Metal: 1547 - Contained Unit: koz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred oxide gold grade is 0.19 g/t. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Low grade - Negative factor: Inferred category Evidence · table > 0.22 Context: 220.8 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-22) copper #### Identity - Commodity: copper - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 220800000 - Grade: 0.19 - Grade Unit: % - Contained Metal: 420 - Contained Unit: kt #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred oxide gold grade is 0.19 g/t. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Low grade - Negative factor: Inferred category Evidence · table > 0.19 Context: 220.8 ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-and-centauri-announce-significant-increase-in-mineral-resources-for-th--5392ec99-a496-488a-b183-a90221e1c0b0#fact-resource-facts-23) silver #### Identity - Commodity: silver - Ticker: ALDE #### Resource Data - Category: inferred - Tonnes: 220800000 - Grade: 17.8 - Grade Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-03-02T00:00:00.000Z Reasoning: Inferred oxide gold grade is 0.19 g/t. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Low grade - Negative factor: Inferred category Evidence · table > 17.8 Context: 220.8 ## 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.