湖南宜章县界牌岭矿区萤石矿地质特征及矿床成因分析  

Geological characteristics and genesis of Jiepailing fluorite depositin Yizhang County of Hunnan

作　　者：周旭林 秦雅静[1,2] ZHOU Xulin;QIN Yajing(Hunan Planning Institute of Land Resources,Changsha 410007,Hunan,China;Hunan Province Mineral Reserves Evaluation Center,Changsha 410007,Hunan,China)

机构地区：[1]湖南省国土资源规划院,湖南长沙410007 [2]湖南省矿产资源储量评审中心,湖南长沙410007

出　　处：《矿产与地质》2020年第1期33-40,共8页Mineral Resources and Geology

基　　金：国家矿产资源储量技术标准体系建设项目的子项目“矿产地质勘查规范修订研究”(编号:CB2015-4);“重晶石、毒重石、萤石、硼矿地质勘查规范修订研究”(编号:CB2017-4-17)资助.

摘　　要：湖南宜章县界牌岭矿区位于南岭成矿带中段瑶岗仙钨锡铅锌多金属矿田的西南部。矿区出露石炭纪地层,发育SN向、NEE向、NWW向三组断裂,出露有燕山期花岗斑岩。区内萤石矿达超大型规模,矿体厚度大,呈似层状,大透镜状赋存于下石炭统石磴子组碳酸盐岩中,围绕花岗斑岩外接触带分布,受地层、SN向断层、背斜核部、花岗斑岩的联合控制。矿石类型为云母-萤石型、黄玉-云母-萤石型。矿床成因为热液交代型萤石矿床,形成于燕山晚期。Jiepailing fluorite deposit is located at the southwest of the Yaogangxian W-Sn-Pb-Zn polymetallic ore field in the middle segment of the Nanling metallogenic zone.Carboniferous strata are exposed in the mining area,and three groups of faults,in SN,NEE and NWW dirctions,are developed,and granite porphyries of Yanshanian period are exposed.The mineral reserves of fluorite reach the super-large scale.Thick stratiform and len-shaped orebodies are hosted in the Carboniferous carbonates of Shidengzi Formation around the outer contact between the granite porphyry and the carbonate.The orebodies are jointly controlled by the strata,SN-striking fault,anticline core and granitic porphyry.There are two types of ores,muscovite-fluorite type and topaz-muscovite-fluorite type.The deposit genesis belongs to a hydrothermal metasomatic type of fluorite deposit formed in the late Yanshanian period.

关 键 词：萤石矿 花岗斑岩 地质特征 矿床成因 界牌岭矿区 湖南 

分 类 号：P619.215[天文地球—矿床学]