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Unigold Phase 1 Metallurgical Studies Indicate 84% Gold Recovery from Candelones Extension Mineralization Using Conventional Recovery Processes
TORONTO, May 14, 2020 (GLOBE NEWSWIRE) - Unigold Inc. (“Unigold” or the “Company”) (TSX-V:UGD) is pleased to report on the completion of Phase 1 Metallurgical S
About this update from Unigold Inc.
[{"type":"text","content":" TORONTO, May 14, 2020 (GLOBE NEWSWIRE) - Unigold Inc. (“Unigold” or the “Company”) (TSX-V:UGD) is pleased to report on the completion of Phase 1 Metallurgical Studies of high-grade composite samples collected from the Candelones deposits on the Neita Concession, Dominican Republic. Composite samples were collected from large diameter drill cores recovered in October and November of 2019. Metallurgical testing was performed at Bureau Veritas Minerals – Metallurgical Division in Richmond B.C., under the supervision of Mr. Richard Gowans, B.Sc. P.Eng., President and Principal Metallurgist, Micon International Limited (“Micon”). The studies commenced with mineral deportment and QEMSCAN analysis in late February and culminated in recovery of gold from flotation concentrates in late April. Previous metallurgical studies on mineralized samples from Candelones deposits had not incorporated the higher grade intermediate epithermal sulphide mineralization (types c and d below). “Phase 1 metallurgical studies have demonstrated that the Candelones epithermal mineralization responds well to standard gold recovery techniques”, commented Joe Hamilton, Chairman & CEO of Unigold. “We expect that average recoveries of 80% to 85% are achievable for the later epithermal mineralization at Candelones Extension. Our drilling in 2016, 2019 and 2020 suggests that this high-grade mineralization may overprint the early, low-grade primary mineralization along reactivated feeder zones. The high-grade domains appear to be continuous with predictable geometry and remain open along strike and at depth. The later sulphide metallurgy is encouraging and future tests will concentrate on defining a flow sheet that can be used in economic studies. Column tests of the oxide mineralization suggest 80% gold extraction within 72 hours, suggesting that the at-surface oxide mineralization may be amenable to heap leach recovery.” Four, 200 kg composite samples were collected for testing: Low grade oxide mineralization – Candelones Main and Connector; early-stage low-grade disseminated sulphide mineralization – Candelones Extension; later epithermal overprint sulphide mineralization – Candelones Extension, and late-stage epithermal feeder sulphide mineralization Candelones Extension. Testing demonstrated gravity recoveries rangi...