总第207期 2015年12月
文章编号：1009-9700(2015)06003406
南方金属 SOUTHERNMETALS
丰顶山花岗岩岩体地质特征
及其与成矿关系探讨
刘飚，张俊，王天国，王玉朝，李曦，吴德（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：
Sum.207
December2015
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）
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人的复式岩体，一为加里东晚期中酸性岩浆若：第一阶段侵人的黑云每花岗岩、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、黑云角闪闪长若：二为燕山期中酸性－中基型岩浆岩：第一阶段为燕山早期侵人的花岗闪长岩：第二阶段为燕山晚期侵人的辉长辉绿岩、辉长琦岩.其中加里东晚期第二阶段黑云母花岗岩和蕉山
期早期侵人的黑云母花岗闪长岩含矿性较好，对成矿意义重大，关键词：丰顶山花岗岩：多期次多阶段；复式岩体：成矿关系
中图分类号：P619.22*202
文献标识码：A
DiscussiononGeologicalCharacteristicsMineralization RelationshipofGraniteRockinFengdingMountain
LIU Biao', ZHANG Jun',WANG Tian-guo', WANC Yu-Chao', LI Xi?, WU De
(1. Key Labonatory of Metallogenic Prediction of Nonferrous Metals,Ministry of Education, Centnal South University, Changsha, 410083, P. R. China; 2. Earth Resources and Environment College of Seience, Yunnan University, Kunming 650504, P. R. China; 3. Feng Top Mountain Mining Company, Yichun 336000, P. R. China)
Abstract: The geological features, the time of formation and the relationship of mineralization of the gnanite 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 gnanite 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 finst stage invasive rock is biotite granite, biotite granite plagioclase, biotite monzonite gnanite; The second phase intrusive rock is quartz diorite, hom-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.
Key words: the granite in Fengding Mountain; multiperiodic multistage; complex rock mass; minenalization relationship
1地质背景
丰顶山花岗岩体位处于扬子准地台江南台隆南缘，萍乡一乐平坳陷带西段的萍乡一高安凹褶断束收稿日期：2015-07-03
的北西部，北与九岭隆起相接，南和武功山降起为邻区内主要的两个地质单元为北部的九岭推覆体和南部的武功山滑脱体，并在丰顶山南形成了巨大的对冲构造：区内主要有加里东期形成的萍乡
作者简介：对题（1989一），男，中南大学矿床告查专业硕士研完生，研完方向：有色金属找矿