皖南花山锑金矿床硫化物电子探针分析及其指示意义  被引量:3

The electron probe microanalysis and its significance of the sulfides in Huashan antimony-gold deposit, South Anhui

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作  者:肖庆玲 周涛发[1] 张达玉[1] 钱祥[2] 陈雪锋[1] 陈杨 

机构地区:[1]合肥工业大学资源与环境工程学院,合肥230009 [2]安徽省地质矿产勘查局311地质队,安庆246003

出  处:《地质科学》2017年第4期1312-1326,共15页Chinese Journal of Geology(Scientia Geologica Sinica)

基  金:国家重点研究发展计划项目(编号:2016YFC0600206)和国家自然科学基金项目(编号:41320104003)资助.

摘  要:花山锑金矿床位于皖南东至县境内, 是皖南地区代表性金—多金属矿床之一。 本次工作对花山锑金矿床开展了野外地质、岩相学特征观察以及金属硫化物电子探针分析, 得到以下结论:1) 花山锑金矿床主要成矿阶段可分为毒砂—黄铁矿(PyⅠ)阶段、黄铜矿—黄铁矿 (PyⅡ)阶段和方解石—辉锑矿阶段。 2) 金在不同阶段硫化物中均有赋存, 其矿化伴随整个热液成矿过程, 且以毒砂—PyⅠ阶段和黄铜矿—PyⅡ阶段为主。 毒砂—PyⅠ阶段和黄铜矿—PyⅡ阶段发育金矿化, 无锑矿化, 方解石—辉锑矿阶段发育锑、金共生矿化。 3) 早阶段即毒砂 —PyⅠ阶段和黄铜矿—PyⅡ阶段载金矿物为黄铁矿、毒砂及黄铜矿, 成矿物质来源以地层为 主;晚阶段即方解石—辉锑矿阶段载金矿物为辉锑矿, 成矿物质来源以燕山期岩浆岩为主。 本次工作对东至及皖南地区金矿床的寻找勘探具有重要的指示意义。Huashan antimony-gold deposit is located in Dongzhi County, South Anhui Province, which is the biggest Sb-Au deposit in Jiangnan transition zone. Based on the detailed geological, petrographic observation and the electron probe microanalysis of the main metal sulfides, We conclude that: 1) The mineralization stages of Huashan antimony-gold deposit consist of arsenopyrite-pyrite(PyⅠ)stage, chalcopyrite-pyrite(PyⅡ)stage and calcite-stibnite stage. 2) Gold exists in multi-sulfides, which means the gold mineralization occured in the whole ore-forming process. There are gold mineralization but no antimony mineralization in arsenopyrite-Py Ⅰ stage and chalcopyrite-Py Ⅱ stage, and the gold mineralization is coexistence with antimony mineralization in calcite-stibnite stage. 3) The main gold bearing minerals is PyⅠ, arsenopyrite, chalcopyrite and stibnite, and the metallogenic materials of the earlier stage mineralization(arsenopyrite-PyⅠ stage and chalcopyrite-pyrite(PyⅡ)are mainly from strata, and later stage’s(calcite-stibnite stage)metallogenic materials are mainly from Yanshanian magma.

关 键 词:花山锑金矿床 矿化特征 电子探针 皖南地区 

分 类 号:P618.51[天文地球—矿床学]

 

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