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卡林金矿位于美国内华达州中北部欧雷克县以北,是一个大型金矿床.1965年矿石量约1100万吨,平均含金9.9克/吨,现矿石量已扩大至2000～3000万吨.该金矿床有三个显著的地质特征:(1)不是脉金,也不是伴生金,而是一个大型的浸染型金矿床;(2)金颗粒特别细,大部分呈胶粒大小(<0.2μ),而且黄铁矿等硫化物较少,矿石不易辨认;(3)金矿体并不产于硅化带,而是在其旁侧的泥化碳酸盐岩石中,胶粒金的富集与胶体作用有关.
Located in the north of Oreck County, north-central Nevada, USA, Carlin Gold Mine is a large gold deposit with an estimated 11 million tonnes of ore in 1965 with an average gold content of 9.9 g / t. The ore is now expanded to between 2 and 30 million This gold deposit has three distinct geological features: (1) it is not a pulse gold or associated gold but a large disseminated gold deposit; (2) the gold particles are particularly fine and mostly colloidal in size (< 0.2μ), but less sulfide such as pyrite, ore is not easy to identify; (3) gold ore is not produced in the silicidation zone, but in its next side of the muddy carbonate rock, Enrichment and the role of colloids.