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Also called $quality, originated in mining, gold, gold is mostly anywhere from under the hot springs through the rock seam fine and precipitate a safe, often with quartz caught in the gaps of the rock, ore after mining, crushing, washing, big gold can be directly picked to take, little grains of usable mercury dissolve. Mine gold and other metal associated most, of which the silver, and gold in platinum, zinc and other metal, in other metal did not put forward and quality gold called before. Ore from different mine gold and other metal components with different ?