摘要
硅质糜棱岩是金山金矿床最主要的矿石类型,SiO_2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。
The siliceous mylonite with SiO_2 more than 85% is the main ore type of Jinshan gold deposit;the distribution characteristics
and ratios of trace elements for siliceous mylonite and country rocks of the deposit are about the same;gold mineralization of the
deposit has a close genetic relation with mylonitization;the Shuangqiaoshan group may provide,through the action of shear,the
necessary ore-forming components during the formation of the deposit.
出处
《地质与勘探》
CAS
CSCD
北大核心
1993年第8期47-51,共5页
Geology and Exploration
基金
国家自然科学基金
