铜陵天马山硫金矿床矽卡岩矿物学特征及矿石硫同位素地球化学研究

周曙光, 蔡杨, 杜建国, 吴硕, 施珂, 李孜腾. 2023. 铜陵天马山硫金矿床矽卡岩矿物学特征及矿石硫同位素地球化学研究. 华东地质, 44(1): 51-66. doi: 10.16788/j.hddz.32-1865/P.2023.01.005
引用本文: 周曙光, 蔡杨, 杜建国, 吴硕, 施珂, 李孜腾. 2023. 铜陵天马山硫金矿床矽卡岩矿物学特征及矿石硫同位素地球化学研究. 华东地质, 44(1): 51-66. doi: 10.16788/j.hddz.32-1865/P.2023.01.005
ZHOU Shuguang, CAI Yang, DU Jianguo, WU Shuo, SHI Ke, LI Ziteng. 2023. Skarn mineralogical characteristics and ore sulfur isotope geochemistry of Tianmashan sulfur-gold deposit, Tongling area. East China Geology, 44(1): 51-66. doi: 10.16788/j.hddz.32-1865/P.2023.01.005
Citation: ZHOU Shuguang, CAI Yang, DU Jianguo, WU Shuo, SHI Ke, LI Ziteng. 2023. Skarn mineralogical characteristics and ore sulfur isotope geochemistry of Tianmashan sulfur-gold deposit, Tongling area. East China Geology, 44(1): 51-66. doi: 10.16788/j.hddz.32-1865/P.2023.01.005

铜陵天马山硫金矿床矽卡岩矿物学特征及矿石硫同位素地球化学研究

  • 基金项目:

    安徽省自然资源科技项目"安庆—池州—铜陵地区深部成矿背景及深部找矿预测研究(编号:2020-k-13)"、安徽省重点研究与开发项目"铜陵大型资源基地接替资源勘查研究(编号:201904a07020077)"和安徽省地质调查院培育计划项目"安徽铜陵狮子山矿田中生代侵入岩岩石包体对深部成矿作用的指示研究(编号:20KJ-04)"联合资助。

详细信息
    作者简介: 周曙光,1966年生,男,高级工程师,大学本科,主要从事矿产地质勘查及研究工作。Email:932753432@qq.com。
    通讯作者: 蔡杨,1986年生,男,高级工程师,博士,主要从事矿产地质勘查及研究工作。Email:youngtsai@outlook.com。
  • 中图分类号: P575.1;P618.51

Skarn mineralogical characteristics and ore sulfur isotope geochemistry of Tianmashan sulfur-gold deposit, Tongling area

More Information
  • 天马山硫金矿是铜陵矿集区典型的层控热液叠加改造型矿床,层状矿体中发育大量的矽卡岩矿物。为查明该矿床中矽卡岩矿物的类型及形成环境,探讨矽卡岩与硫、金成矿之间的关系,对主要的矽卡岩矿物开展了矿物学及矿物化学研究,并对矿石进行了硫同位素地球化学研究。研究表明:矿区内的矽卡岩矿物以石榴子石和辉石为主,其中石榴子石以钙铁榴石为主,属于钙铁榴石-钙铝榴石固熔体系列(Gro0~18.73And80.54~99.00Spe+Pyr+Alm0.54~1.47);辉石以透辉石为主,其次为钙铁辉石,属于透辉石-钙铁辉石系列(Di62.35~97.65Hd1.89~36.27Jo0.31~1.55)。天马山硫金矿的矿物组合(钙铁辉石+透辉石)属于氧化型矽卡岩,表明矽卡岩形成于相对高温和高氧逸度的条件。石榴子石和辉石端元组分特征及辉石Mn/Fe值(0.02~0.07)具有典型的矽卡岩型铜、金矿床特征。矿石硫同位素具有岩浆源的特征,与区内燕山期岩浆-成矿作用形成的矿石一致,而明显区别于喷流-沉积作用形成的矿石,显示成矿作用与燕山期岩浆活动具有密切的成因联系。燕山期中酸性岩浆交代碳酸盐岩围岩形成大量矽卡岩,矽卡岩矿物的形成增加了岩石的孔隙度和渗透率,为晚期硫、金矿床的形成提供了有利条件。
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收稿日期:  2022-08-25
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