江西寻乌湖岽钨矿成矿年代学及成矿流体特征  

Metallogenic Chronology and Ore-Forming Fluid Characteristics of Hudong Tungsten Deposit in Xunwu County, Jiangxi Province

作　　者：漆富勇[1] 彭琳琳[1] 尹积扬 黄建[1] 罗剑[1] QI Fuyong;PENG Linlin;YIN Jiyang;HUANG Jian;LUO Jian(Gannan Branch,Jiangxi Geological Survey,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西省地质矿产勘查开发局赣南地质调查大队

出　　处：《中国钨业》2019年第4期1-7,19,共8页China Tungsten Industry

基　　金：中国地质调查项目(DD20160037)

摘　　要：诸广山、于山、武夷山西坡为赣南三大成矿亚带,对诸广山、于山成矿带钨矿床的研究已较为系统,而对武夷山西坡成矿带钨矿的研究较少。通过对湖岽钨矿地质特征、矿石辉钼矿Re-Os同位素测年、成矿流体及包裹体特征等研究,以期深化武夷山西坡成矿带钨矿的认识。湖岽钨矿为石英脉、接触交代复合型钨多金属矿床,成矿年龄为159.6±5.5 Ma;同位素测试结果表明,成矿流体主要来源于岩浆水;矿床流体包裹体类型主要为普通气液包裹体,均一温度峰值为160~220℃,冰点、盐度、密度均值分别为-2.0℃、3.30%、0.873 g/cm^3。总体特征与诸广山、于山成矿带典型钨矿床基本一致。Zhuguangshan, Yushan and the western slope of Wuyishan are the three major metallogenic sub-belts in southern Jiangxi. The research on tungsten deposits in Zhuguangshan and Yushan metallogenic belts has been relatively systematic, while the research on tungsten deposits in the western slope of Wuyishan metallogenic belt is almost blank. Based on the study of the geological characteristics, Re-Os isotope dating of molybdenite ore, ore-forming fluid and inclusion characteristics of hudong tungsten ore, we hope to deepen the understanding of tungsten ore in the west slope of Wuyishan mountain. Hu’ao tungsten deposit is a Shi Ying vein and contact metasomatic composite tungsten polymetallic deposit with a mineralization age of 159.6±5.5 Ma;Isotope tests show that the oreforming fluid mainly comes from magmatic water. The fluid inclusions in the deposit are mainly ordinary gas-liquid inclusions, with the homogeneous temperature peak value of 160~220 ℃, freezing point, salinity and density mean values of-2.0 ℃, 3.30 % and 0.873 g/cm^3 respectively. The overall characteristics are basically consistent with typical tungsten deposits in Zhuguangshan and Yushan metallogenic belts.

关 键 词：湖岽钨矿 成矿年龄 成矿流体 武夷山西坡 流体包裹体 

分 类 号：P618.67[天文地球—矿床学]