摘要
萤石矿是浙江省的优势矿种之一,储量在中国名列前茅。根据矿床成因可分为火山-次火山热液充填型、岩浆期后热液充填型和岩浆热液交代型3种类型。火山-次火山热液充填型萤石矿床主要分布于浙东南火山岩分布区,成矿作用与中生代火山活动关系密切;岩浆期后热液充填型和岩浆热液交代型萤石矿床主要分布于浙西北燕山期花岗岩周围,成矿作用与燕山期岩浆侵入活动密切相关。文章根据浙江省萤石矿床的成因类型、成矿作用、构造环境、成矿时代等特征,可将其归纳为2个成矿系列:与中生代火山-次火山热液有关的萤石矿床成矿系列和与中生代岩浆侵入作用有关的萤石矿床成矿系列。其中,与中生代岩浆侵入作用有关的萤石矿床成矿系列又可分为与燕山期中酸性岩浆期后热液充填作用有关的萤石矿床成矿亚系列及与燕山期中酸性岩浆热液交代作用有关的萤石矿床成矿亚系列。在此基础上,提出了2大萤石矿床成矿系列的找矿方向分别为浙东南晚白垩世火山断陷盆地边缘断裂、火山口环形和放射状断裂及浙西北高氟岩体。
Fluorite resource is a kind of dominant mineral in Zhejiang, and its fluorite reserves have reached the top in China. According to ore genesis, it can be divided into three types, i.e., volcanic-subvolcanic hydrothermal filling type, post-magmatic hydrothermal filling type and magmatic hydrothermal metasomatic type. Volcanic hydrothermal filling fluorite deposits are mainly located in volcanic rocks in southeast Zhejiang, which are closely related to Mesozoic volcanic activities. Magmatic hydrothermal filling and metasomatism fluorite deposits occur around the Yanshanian granite intrusions, which are positively correlated with Yanshanian magmatism. According to ore genesis, mineralization, tectonic environment and metallogenic epoch of fluorite deposits in Zhejiang, the authors recognized two metallogenic series, i.e., fluorite metallogenic serie related to Mesozoic volcanie-subvolcanic hydrothermal and fluorite metallogenic series related to Mesozoic magmatism, and fluorite metallogenic series related to Mesozoic magmatism which consists of two metallogenic subseries： fluorite metallo-genie subserie related to Yanshanian intermediate-acidic magmatic hydrothermal filling mineralization and fluo- rite metallogenic subseries related to Yanshanian intermediate-acidic magmatie hydrothermal metasomatism. It is indicated that marginal fault of late Cretaceous volcanic-graben basin, circular and radiant fractures around vol- canic craters in southeast Zhejiang and peripheral areas of high fluoride intrusions in northwest Zhejiang are fur- ther prospecting targets for fluorite resources.
出处
《矿床地质》
CAS
CSCD
北大核心
2015年第6期1209-1222,共14页
Mineral Deposits
基金
"浙江省矿产资源调查成果综合集成与服务产品开发(编号:12120114007201)"项目资助
关键词
地质学
萤石矿床
矿床类型
成矿系列
找矿方向
geology, fluorite deposits, deposit type, metallogenic series, prospecting direction
