# Lundin Mining Increases M&I Copper Mineral Resources by 37% and Updates Mineral Reserves Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/lundin-mining-increases-m-i-copper-mineral-resources-by-37-and-updates-mineral-r--0950df56-1606-4e39-b436-3be3e1458716 Original source: https://finance.yahoo.com/news/lundin-mining-increases-m-copper-044500603.html Publisher: yahoo\_press Original announcement: 2026-02-19T04:45:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Lundin Mining Corporation - Ticker: LUN - Exchange: TSX - Region: Unavailable - Primary commodity: Copper - Secondary commodities: Gold, Silver - Document categories: Resource update - Extracted: 2026-09-21 08:11:57 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Lundin Mining has reported updated Mineral Resource and Mineral Reserve estimates effective December 31, 2025. The update highlights a 37% increase in Measured and Indicated copper resources, totaling 28,372 kt at 0.35% Cu. Reasoning: The company reports a significant 37% increase in M&I copper resources, with large contained metal amounts across multiple commodities. - Positive factor: Significant tonnage growth in copper - Positive factor: Substantial contained metal scale Facts used in scoring: 3 ## Classification and evidence **Tonnage Growth** Polarity: positive Definition: Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved. Why it applies: Headline states M&I copper mineral resources increased by 37% Evidence · text > Increases M&I Copper Mineral Resources by 37% **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document provides updated mineral resource estimates effective Dec 31, 2025 Evidence · text > report its Mineral Resource and Mineral Reserve estimates effective as of December 31, 2025 ## Extracted facts Stored fact records: 3. Some facts used in scoring do not have a stored record. ## Resource Estimates (3) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/lundin-mining-increases-m-i-copper-mineral-resources-by-37-and-updates-mineral-r--0950df56-1606-4e39-b436-3be3e1458716#fact-resource-facts-0) copper #### Identity - Commodity: copper - Ticker: LUN #### Resource scope - Estimate type: resource - Effective date: 2025-12-31T00:00:00.000Z - Resource group id: resource:59433cb9d1b7a2650fcb #### Resource Data - Category: indicated - Tonnes: 8193000000 - Grade: 0.35 - Grade Unit: % - Contained Metal: 28372 - Contained Unit: kt #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-19T00:00:00.000Z Reasoning: Significant copper resource reported. - Positive factor: Large tonnage and contained copper Evidence · text > 8,193 million tonnes \("Mt"\) at 0.35% Cu #### 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-extractions.minestarters.com/news/lundin-mining-increases-m-i-copper-mineral-resources-by-37-and-updates-mineral-r--0950df56-1606-4e39-b436-3be3e1458716#fact-resource-facts-1) gold #### Identity - Commodity: gold - Ticker: LUN #### Resource scope - Estimate type: resource - Effective date: 2025-12-31T00:00:00.000Z - Resource group id: resource:59433cb9d1b7a2650fcb #### Resource Data - Category: indicated - Tonnes: 8193000000 - Grade: 0.18 - Grade Unit: g/t - Contained Metal: 48.2 - Contained Unit: moz #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-19T00:00:00.000Z Reasoning: Gold reported as a secondary commodity in the resource estimate. Evidence · text > 48.2 million ounces \("Moz"\) gold #### 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-extractions.minestarters.com/news/lundin-mining-increases-m-i-copper-mineral-resources-by-37-and-updates-mineral-r--0950df56-1606-4e39-b436-3be3e1458716#fact-resource-facts-2) silver #### Identity - Commodity: silver - Ticker: LUN #### Resource scope - Estimate type: resource - Effective date: 2025-12-31T00:00:00.000Z - Resource group id: resource:59433cb9d1b7a2650fcb #### Resource Data - Category: indicated - Tonnes: 8193000000 - Grade: 3.08 - Grade Unit: g/t - Contained Metal: 812 - Contained Unit: moz #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-19T00:00:00.000Z Reasoning: Silver reported as a secondary commodity in the resource estimate. Evidence · text > 812 Moz silver \(8,193 million tonnes \("Mt"\) at 0.35% Cu, 0.18 g/t Au and 3.08 g/t Ag\) #### 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 ## 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.