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Liberty Gold Reports Weighted Average 80.8% Gold Extraction in Phase 3 Metallurgical Column Testing - Black Pine Oxide Gold Deposit, Idaho
VANCOUVER, British Columbia, Oct. 27, 2021 (GLOBE NEWSWIRE) -- Liberty Gold Corp. (LGD-TSX; OTCQX: LGDTF) (“Liberty Gold” or the “Company”) is pleased to report
About this update from Liberty Gold Corp
[{"type":"text","content":" VANCOUVER, British Columbia, Oct. 27, 2021 (GLOBE NEWSWIRE) -- Liberty Gold Corp. (LGD-TSX; OTCQX: LGDTF) (“Liberty Gold” or the “Company”) is pleased to report results from Phase 3 variability composite metallurgical column testing from large-diameter (“PQ”) drill core at its Black Pine Oxide Gold Project in southeastern Idaho (“Black Pine”). The objective of the Phase 3 metallurgical program was to expand the geographical and ore type distribution of Phase 1 and Phase 2 column testing which included six surface bulk samples and 29 variability composites. Highlights Phase 3 testing included 45 new variability composites testing the full range of rock types, gold (“Au”) grades and ore types encountered across Black Pine. Aggregate results support a simple, low capital, low operating cost, Run-of-Mine (“ROM”) heap leach processing route for Black Pine ores. Gold extractions are consistent with previous metallurgical programs, with >80% of the leachable gold extracted within 10 days and final column leach gold extractions ranging up to 94.8%: Phase 1 bulk sample column test results: 78.9% weighted average gold extraction, ranging up to 92.8%1 Phase 2 variability composite column tests: 82.1% weighted average gold extraction, ranging up to 94.5%1 Historical column tests from bulk samples and drill core composites: 80.8% weighted average gold extraction. 1 See press releases dated August 18, 2020 and June 16, 2020 Gary Simmons, independent consulting metallurgist to Liberty Gold commented: “Data from metallurgical testing to date at Black Pine continues to indicate rapid leaching and relatively high gold extractions from these gold oxide ores, with a consistent insensitivity to particle size and a predictable grade-recovery relationship. In Phase 3 a wider range of material types were tested and 38 of 39 tested composites passed load permeability testing at 100-metre heap height. Internal development of clay and rock models indicate that a smaller portion of the resource may require in-pit or top-of heap blending, eliminating the need for a Crush/Agglomeration flowsheet component, and supporting simple Run-of-Mine leaching at Black Pine.” All metallurgical work at Black Pine has been supervised by Gary Simmons, formerly the Director of Metallurgy and Technology for Newmont Mining Corp. Mr. Simmons has manage...