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粤西大沟谷钠长石岩型金矿床主要产于震旦系乐昌峡群呈似层状及脉状分布的钠长石岩中。钠长石岩的岩石化学成分及微量元素组成与金矿体的基本相同。黄铁矿Ｐｂ、Ｓ同位素组成可分为两组：富放射性成因铅贫３４Ｓ体系；贫放射性成因铅富３４Ｓ体系。前者与震旦系片岩的组成相似，后者来自较老富基性岩的沉积岩。
The western Guangdong feldspathic albite rock type gold deposit is mainly produced in albite in the stratiform and vein-like distribution of the Lechang Gorge Group in the Sinian. The chemical composition and trace element composition of albite rocks are basically the same as gold ore bodies. Pyrite Pb, S isotopic composition can be divided into two groups: rich radioactive lead-poor 34S system; poor radioactive lead-rich 34S system. The former is similar in composition to Sinian schist, the latter from sedimentary rocks of older Fuji rocks.