丰顶山花岗岩岩体地质特征及其与成矿关系探讨  

Discussion on Geological Characteristics Mineralization Relationship of Granite Rock in Fengding Mountain

作　　者：刘飚[1] 张俊[1] 王天国[1] 王玉朝[2] 李曦[1] 吴德 

机构地区：[1]中南大学教育部有色金属成矿预测重点实验室,湖南长沙410083 [2]云南大学地球科学资源与环境学院,云南昆明650504 [3]丰顶山矿业公司,江西宜春336000

出　　处：《南方金属》2015年第6期34-39,共6页Southern Metals

摘　　要：丰顶山花岗岩的地质特征、形成时间以及对周围金矿的成矿关系一直制约着区域的找矿工作.本文在对丰顶山花岗岩体详细的野外地质调查和区域地质资料研究的基础上,认为丰顶山花岗岩体为一个两期次四阶段侵入的复式岩体.一为加里东晚期中酸性岩浆岩:第一阶段侵入的黑云母花岗岩、黑云母斜长花岗岩、黑云母二长花岗岩;第二阶段侵入的石英闪长岩、黑云角闪闪长岩;二为燕山期中酸性-中基型岩浆岩:第一阶段为燕山早期侵入的花岗闪长岩;第二阶段为燕山晚期侵入的辉长辉绿岩、辉长玢岩.其中加里东晚期第二阶段黑云母花岗岩和燕山期早期侵入的黑云母花岗闪长岩含矿性较好,对成矿意义重大.The geological features, the time of formation and the relationship of mineralization of the granite in Fengding Mountain have been restricted the gold mine prospecting work around the area. Based on the detailed field geological survey and research on regional geological data of the granite in Fengding Mountain, we think it is a two-phase and four-stage inva- sive complex rock mass. The first invasive rock is Caledonian acidic magmatic rocks：the first stage invasive rock is biotite granite, biotite granite plagioclase, biotite monzonite granite; The second phase intrusive rock is quartz diorite, horn- blende-biotite diorite. The second invasive rock is Yanshanian acidic-the base type magmatic rocks： The first phase intru- sive rock is the early Yanshan intrusive granodiorite; The second phase intrusive rock is the late Yanshan intrusive gabbro diabase, gabbro porphyry. Among them the biotite granodiorite of second stage Caledonian and Yanshanian biotite granite intrusion has better ore-bearing potential and significant mineralization.

关 键 词：丰顶山花岗岩 多期次多阶段 复式岩体 成矿关系 

分 类 号：P588.121[天文地球—岩石学]