【摘要】 硅质糜棱岩是金山金矿床最主要的矿石类型,SiO₂含量大于85%,由重结晶的石英亚颗粒组成。硅质糜棱岩与围岩具有一致的微量元素（包括稀土元素）分布特征和相近的元素对比值;金的成矿作用与糜棱岩化作用有密切的成因联系;在剪切变形变质作用下,双桥山群为金山金矿床的形成提供了物质来源。更多还原

【Abstract】 The siliceous mylonite with SiO₂ more than 85% is the main ore type of Jinshan gold deposit;the distribution characteristicsand ratios of trace elements for siliceous mylonite and country rocks of the deposit are about the same;gold mineralization of thedeposit has a close genetic relation with mylonitization;the Shuangqiaoshan group may provide,through the action of shear,thenecessary ore-forming components during the formation of the deposit.更多还原