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Marimaca Copper Announces Positive Final Results from the Phase 5 Metallurgical Program at the Marimaca Oxide Deposit
VANCOUVER, British Columbia, June 15, 2022 (GLOBE NEWSWIRE) -- Marimaca Copper Corp. (“Marimaca Copper” or the “Company”) (TSX: MARI) is pleased to announce res
About this update from Marimaca Copper Corp.
[{"type":"text","content":" VANCOUVER, British Columbia, June 15, 2022 (GLOBE NEWSWIRE) -- Marimaca Copper Corp. (“Marimaca Copper” or the “Company”) (TSX: MARI) is pleased to announce results of the Phase 5 Metallurgical testing program (the “Phase 5 Program” or the “Program”) for the Company’s flagship Marimaca Oxide Copper Project (“the MOD” or “the Project”), located in northern Chile. The Phase 5 Program represents the most comprehensive metallurgical study completed to date for the MOD and is the final phase expected prior to the planned commencement of the Definitive Feasibility Study. The Phase 5 Program is an important de-risking event for Marimaca and confirms the results from the previous four phases of metallurgical testing, which indicate good leach kinetics and moderate acid consumption. Results from Phases 1-5 Metallurgy and the 2021 Variability Program (see announcement dated November 30, 2021) will form the basis for the updated process design criteria and metallurgical assumptions for the Definitive Feasibility Study. Highlights Rigorous 5th phase metallurgical test-work program represents a milestone de-risking event for Marimaca, further improving confidence in the expected metallurgical performance at the MOD Complements and extends previous four phases of metallurgical testing Program consisted of full-scale column testing, mini-column testing, container-leach testing, sulfation tests, acid sensitivity testing, Iso-pH testing, and head characterization for heap leach (“HL”) and run-of-mine (“ROM”) samples Robust sample set with several composites across all mineral subdomains through all phases of testing Confirms the understanding of the MOD’s metallurgical performance with results from Phase 5 consistent with Phases 1-4 Metallurgy Results significantly improve the resolution of Marimaca’s geo-metallurgical dataset Confirms metallurgical performance in scaled-up, industrial height operating design conditions (4m columns) Provides further confidence in expected acid consumption with clear potential for optimizations to reduce acid consumption demonstrated in both HL and ROM test results Testing also confirms very low levels of carbonates (<1%) and nitrates (<0.03%) in general within the MOD Results continue to demonstrate potential upside to recoveries when in industrial-scale operation Recoveries in the column and bottle roll ...