Mercury Usage in Gold Mining and Why It Is a Problem - The BalanceApr 15, 2018 . Why is mercury used in gold mining and why is it a problem, which includes . In alluvial, colluvial or eluvial placer deposits, mercury is used for the . Guiana and French Guiana), Indonesia, The Philippines and part of.placer deposit gold mining indonesia,Placer deposit | geology | BritannicaExamples of stream placers include the rich gold deposits of Alaska and the . deposits of Malaysia, Thailand, and Indonesia, and the diamond placers of Congo.
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