新疆东戈壁斑岩型钼矿床成矿流体包裹体温度-压力研究  

Analysis of metallogenic conditions of East Gobi porphyry molybdenum deposit

作　　者：杨志强[1] 吴邦友[1] 郑松森[1] 陈培伟[1] 安金亮[1] 

机构地区：[1]河南省地矿局第二地质勘查院,河南许昌461000

出　　处：《地质找矿论丛》2012年第3期308-314,共7页Contributions to Geology and Mineral Resources Research

摘　　要：东戈壁斑岩型钼矿床是在新疆境内发现的第一个特大型钼矿,钼资源量(331)+(332)+(333)约503 474.66t,矿石平均品位0.115%。矿床的形成与隐伏斑状花岗岩体有关,矿化的主要载体是以石英脉、钾长石脉为主的各种脉体,即该矿床兼具斑岩型及脉型矿床的特征。通过对含矿脉体中流体包裹体的研究,初步确定矿床的成矿温度为197～390℃,成矿压力为531.04×105～752.10×105 Pa,成矿深度为1.68～2.39km,成矿流体为富含多种气态组分的低盐度流体;成矿时代为华力西晚期;矿床成因类型应为浅成中高温岩浆热液型钼矿床。The East Gobi porphyry molybdenum deposit is a newly discovered super-large ore deposit in Xinjiang. Mo metal resources/reserves （331） ＋ （332） ＋ （333） is estimated at 503 474.66 tons with an average grade of 0. 115% Mo. Formation of the Mo deposit is related to a concealed porphyritic granite body. Mineralization occurs mainly in veins dominated by quartz vein and K-feldspar vein so the deposit shares characteristics of quartz vein type deposit and porphyry deposit. Study on fluid inclusions shows that the deposit is a meso-high temperature magmatic hydrothermal fluid Mo deposit formed at shallower depth and at temperature 197 to 390 ℃ and pressure 531.04×10^5 to 752.10×10^5Pa Pa in Hercynian Period. Key Words： East Gobi Mo deposit; porphyry Mo deposit; ore-forming temperature, pressure and depth; Xinjiang

关 键 词：东戈壁钼矿 斑岩型 流体包裹体 成矿温度-压力-深度 新疆维吾尔自治区 

分 类 号：P611[天文地球—矿床学] P618.65[天文地球—地质学]