Business
Gunnison Copper Reports Positive Results from Limestone Evaluation to Add New By-Product Revenue at the Gunnison Project in Southeast Arizona
96% of Analyzed Limestone Meets Industrial Specifications for Several Saleable Products, Unlockin...
About this update from Gunnison Copper Corp.
[{"type":"text","content":"Gunnison Copper Reports Positive Results from Limestone Evaluation to Add New By-Product Revenue at the Gunnison Project in Southeast Arizona96% of Analyzed Limestone Meets Industrial Specifications for Several Saleable Products, Unlocking Value for Updated PEA Expected in Q1 2026Phoenix, Arizona--(Newsfile Corp. - October 23, 2025) - Gunnison Copper Corp. (TSX: GCU) (OTCQB: GCUMF) (FSE: 3XS0) (\"Gunnison\" or the \"Company\") is pleased to report positive results from its ongoing High-Value-Add Work Program evaluating the commercial potential of limestone occurring within the planned Gunnison Open Pit mine plan in southeast Arizona. The evaluation indicates that a substantial portion of the limestone, material that is currently scheduled as waste in the mine plan, is suitable for a range of industrial end-use markets, including cement, agricultural lime, and premium paper filler/paint and coatings.\"These initial results suggest a significant opportunity to unlock value from material previously categorized as waste, with potential to supply cement, agricultural lime, and premium filler markets,\" said Roland Goodgame, SVP Business Development. \"As part of our High-Value-Add Work Program, this limestone evaluation could enhance project economics by diversifying revenue and reducing waste handling, and we intend to integrate these findings into our updated PEA expected in Q1 2026, with PFS work already underway.\"Limestone Evaluation Highlights:Sampling Basis: Historical drill holes NSD-40, NSD-41, and NSD-43 were reviewed. Whole-rock analysis (XRF and ICP-MS) was completed on 883 feet of limestone core, representing ~39% of the total logged limestone in these holes.Industrial Suitability: Approximately 96% of the analyzed material met indicative thresholds for cement and agricultural lime applications, averaging >96% calcite and >55% CaO.Premium Applications: Approximately 21% of the analyzed material met indicative thresholds for premium paper filler/coating and high-brightness paint/coatings applications, averaging >97% calcite and ~56% CaO.Scale of Opportunity: The current mine plan schedules approximately 224 million tons of limestone as waste over the contemplated 16-year mine life. Based on the representativeness of these intersections and visual similarity of non-assayed intervals, the Company believes the propo...