赣南萤石矿床形成机理及找矿方向.doc

赣南萤石矿床形成机理及找矿方向 Gannan fluorite deposit formation mechanism and prospecting direction 摘要:赣南地区位于东西向南岭构造带与北东向武夷山构造带的复合部位,大地构造位于欧亚大陆板块与滨西太平洋板块消减带的内侧华夏板块中,是江西省乃至东南地区重要的萤石成矿区。文章研究以现代成矿作用、成矿预测理论为指导,对赣南萤石矿成矿区地层、构造、岩浆岩及萤石成矿流体特征等与成矿有关的信息进行了综合分析,以期研究赣南地区萤石矿成矿规律及找矿预测工作。 赣南地区同时是我国萤石矿产资源的聚集区,其萤石矿产除作为钨锡矿的伴生矿产外,分布有众多的独立萤石矿床,该区已成为我国萤石矿产资源开发的一个重要基地。现办矿山达78个之多。本文旨在通过赣南萤石矿成矿规律的研究,为成矿预测提供科学依据,也为促进当地经济发展服务。 关键词:赣南，萤石，成矿规律，找矿预测，地质找矿。 Southern Jiangxi in the east-west and north east Nan ling belt construction and compounding to the Wuyi mountain area, Eurasian tectonic plate and the Sea in the western Pacific plate subduction zone plate in the inside of China is an important south-east Jiangxi Province, and even fluorite mine area. This paper studies the role of modern ore, ore prediction theory as a guide, on the southern Jiangxi Fluorite Mine Area of strata, magmatic rocks and ore-forming fluid characteristics of fluorite mineralization-related information with a comprehensive analysis to study Gan Fluorite Deposits at the Southern Region and prospecting forecasting. While in gannan region of mineral resources is close, fluorite except as its fluorite tungsten ore mining of mineral resources, the distribution of the associated with numerous independent fluorite deposit, the region has become Chinas fluorite exploitation of mineral resources is an important base. Now do mining of 78. This paper aims to metallogenic regularities of gannan fluorite deposit metallogenic prediction research, in order to provide scientific basis for promoting local economic and development service Keyword: Southern Jiangxi，fluorite， metallogenic regularityprospecting forecasting， geological prospecting. 一、区域地质背景 (一)矿区概况 赣南地区位于东西向南岭构造带与北北东向武夷山构造带的复合部位,大地构造位于欧亚大陆板块与滨西太平洋板块消减带的内侧华夏板块中,是处于钦—杭古板块结合带和丽水—莲花山、五华—佛冈断裂带之间的一个菱块状变质地体。 (二)地层 主要出露于矿区东南部, 为震旦系绿片岩相浅变质地层。岩性主要为变质中细粒砂岩、变质粉砂岩、绢云母千枚岩等, 为金源岩系。 赣南地区的震旦系，为一段巨厚的复理石或类复理石火山质泥砂岩建造。由于岩性单一，构造复杂，并经区域变质，故划分和对比较为困难，但根据构造旋回、沉积特点、含矿情况以及具有明显特点的标记层，其时空分布，仍有规律可循，故此，南部地区震旦系亦可划分为上、