Native Gold

Gold occurs as the metal itself, usually as microscopic grains locked in sulfide or quartz rather than as visible nuggets.

Gold-gold venezuela meieran2 · Robert M. Lavinsky · CC BY-SA 3.0 · Wikimedia Commons

其定义

Gold occurs as the metal itself, usually as microscopic grains locked in sulfide or quartz rather than as visible nuggets.

材料	角色	品位说明
Gold	The metal itself	Ore grades of 0.5-10 g/t are normal
Silver	Alloyed as electrum	—

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