What is Placer Gold Mining? - Yukon - Charley Rivers National .Unlike hardrock mining, which extracts veins of precious minerals from solid rock, placer mining is the practice of separating heavily eroded minerals like gold.separation of placer gold in talc,Geology Terms – Resource OpportunitiesSeparating the metal-bearing minerals from the barren rock, or gangue, ... Examples are asbestos, gypsum, salt, graphite, mica, gravel, building stone and talc. ... Placer A deposit of sand and gravel containing valuable metals such as gold,.
separation of placer gold in talc