分布在苏联上古生代和中生代火山岩地区的金—银矿床特征是,在距矿带几十米周围的岩浆岩中出现极其剧烈的热液作用,因而在这样矿床上部形成石英一明矾石和石英—高岭石一地开石交代岩。这种类型的热液蚀变随着向深部逐渐地交代成石英—水云母、石英—绢云母、绢云母—冰长石交代岩,这些交代岩直接伴生有金属矿体,大部分围岩中出现钾质交代 The gold-silver deposit, distributed in the Upper Paleozoic and Mesozoic volcanic rocks of the Soviet Union, is characterized by the extremely intense hydrothermal effect in the magmatic rocks around tens of meters from the ore zone, thus forming quartz-alunite and quartz-high Ridge rock to rock metamorphic rocks. This type of hydrothermal alteration gradually transforms into quartz-mica, quartz-sericite, sericite-ice feldspar metamorphic rocks to the deep, and these metamorphic rocks are directly associated with metal ore bodies. Most of the surrounding rock Potassium appeared replacement