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Paragenesis and metal associations in interior Alaska gold deposits: an example from the Fairbanks district

机译:阿拉斯加内部金矿床中的共生和金属关联:以费尔班克斯地区为例

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摘要

"Plutonic-related" gold deposits in Interior and SW Alaska (Tintina Gold Belt) vary significantly in size, grade, vein/deposit morphology, depth of emplacement, distance from causative pluton and metal association. Metal associations such as Au-Bi and Au-As- (Sb-Hg) are a good empirical indicator of the depth of emplacement and distance from causative pluton. These associations have been used successfully in exploration. Results from several analytical techniques also suggest a phenomenological cause for these metal associations. Gold and bismuth have paired mineralogy at high temperatures and, the us, are best correlated at deposits that are deep and/or close to causative intrusions.
机译:内陆和阿拉斯加西南部(Tintina金带)的“与成矿有关”的金矿床在大小,品位,矿脉/矿床形态,进位深度,与致病性岩浆的距离以及金属缔合方面差异很大。金属结合物,例如Au-Bi和Au-As-(Sb-Hg)是很好的经验指标,表明了侵入深度和距致病性质子的距离。这些关联已成功用于勘探中。几种分析技术的结果也表明这些金属缔合的现象学原因。金和铋在高温下具有成对的矿物学特征,在美国,与深部和/或接近成因侵入体的矿床关系最好。

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