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Lara Exploration Ltd.: Lara Exploration Announces Positive Preliminary Metallurgical Test Work for the Planalto Project in Brazil - The test work conducted by Blue Coast included studies on chalcopyrite liberation, rougher and cleaner flotation and comminution, QEMSCAN mineralogy studies and some trialing of gravity concentration on the final copper concentrate to see if a commercial grade gold-copper concentrate could be attained. Mineralogical analysis showed chalcopyrite liberation to be 71-73 % at 80% passing 75 microns, whereas with the coarser grind of 106 microns, the liberation was only 55%. A portion of the chalcopyrite has been shown to occur as fine-grained disseminations enclosed in silicate minerals and as such not readily liberated. A total of eight flotation tests were trialed, using different primary grind sizes and different frothing and collector agents to determine the best flow sheet to achieve an optimum copper grade and recoveries into the roughe ....
Lara Exploration Announces Positive Preliminary Metallurgical Test thewhig.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thewhig.com Daily Mail and Mail on Sunday newspapers.
Centaurus Metals (ASX:CTM) progresses to PFS for Jaguar Project themarketherald.com.au - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from themarketherald.com.au Daily Mail and Mail on Sunday newspapers.
Lara Exploration expands Brazil copper project Planalto project, Brazil. Photo by Lara Exploration. Lara Exploration (TSXV: LRA) announced that it has signed an option agreement with Mineração Tariana, a subsidiary of Anglo American do Brasil, to acquire an exploration license adjacent to its Planalto copper project in Brazil. In a press release, Lara said that the license is being acquired by its subsidiary Planalto Mineração and will form part of an existing staged earn-in agreement with Capstone Mining. Sign Up for the Copper Digest Sign Up Under the terms of the agreement, Planalto will make an initial series of payments totalling $150,000 and must complete a minimum of 2,000 metres of diamond drilling together with resource and reserve studies by May 2022. ....