小秦岭大湖金矿床的矿化分带规律及其指示意义  

ZONATION PATTEREN OF MINERALIZATION IN DAHU Au DEPOSIT, XIAOQINLING AREA AND ITS INDICATIVE IMPORTANCE FOR Au ORE PROSPECTING

作　　者：李晓波[1] 刘继顺[1] 

机构地区：[1]中南大学地学与环境学院,湖南长沙410083

出　　处：《地质找矿论丛》2003年第4期243-248,共6页Contributions to Geology and Mineral Resources Research

基　　金：国家自然科学基金项目(项目编号40072032)资助。

摘　　要：　大湖金矿床位于小秦岭金矿田北矿带中段,最低见矿标高为-12m,为小秦岭之最。矿区石英脉型矿化和构造蚀变岩型矿化具有典型的分带规律,不同矿化阶段的垂向分带特征明显。对比小秦岭地区其他矿床的矿化特征和赋存的空间位置后发现,大湖金矿床的矿化分带规律在区域上具有普遍性意义,即由浅部到深部,矿化类型的变化趋势为 + + 阶段→ + 阶段→ 阶段→构造蚀变岩型矿化。金矿化的垂向分带规律对矿床的深部成矿预测具有重要的指导意义,据此指出了不同矿化亚带矿床深部可能出现的矿化类型。Dahu Au deposit is located in the middle of the north ore delt of the Xiaoqinling Au ore field. -12 m at which Au ore is hit is the minimum elevation in Xiaoqinling area. The deposit is characterized by vertical zonation of quartz vein type and the altered cataclastic rock type Au mineralization, i.e. ore-forming stage Ⅰ+Ⅱ+Ⅲ→Ⅰ+Ⅱ→Ⅰ of quartz vein type mineralization→altered cataclastic rock type mineralization from shallow to depth. The pattern is typical of Au deposits in Xiaoqinling area. It is indicative for prospeting a cartain Au mineralization type in various sub-zones of Au mineralization.

关 键 词：大湖金矿床 矿化垂向分带 小秦岭 河南 矿化特征 赋存状态 

分 类 号：P618.51[天文地球—矿床学] P612[天文地球—地质学]