(一)地質概况 1、變質岩系爲白雲岩和雲母岩構成,從層位上看來,厚層的白雲岩位於下部,其上则爲白雲岩與雲母片岩的交互層。白雲岩大部爲結晶質,中粒或細粒不定,一般灰白色,呈縞状。雲母片岩成分爲黑雲母或絹雲母,石英的含量多少不一,鑛床附近岩石受到很重的變質,主要的變質作用,是受碳酸鹽化矽化及錄泥石化,岩石裂縫中常有迸入的石英方解石細脉,有时交错排列 Geological Survey 1. Metamorphic rocks are composed of dolomite and mica. From the horizon, the thick dolomite is located on the lower part, and the upper part of the dolomite is an interactive layer of dolomite and mica schist. Most of the dolomite is crystalline, medium or fine granule indefinite, generally gray, was 缟 like. Mica schist has the composition of biotite or sericite. The content of quartz varies with each other. The rocks near the deposit are heavily metamorphosed. The main metamorphism is due to carbonate silicification and mud detritalization. Quartz calcite veins, sometimes staggered