标题:
兰坪盆地多金属矿床硫同位素特征及意义Characteristics of Sulfur Isotopes in Polymentallic Deposits in Lanping Basin
作者:
刘远超, 刘腾, 曹淑璐
关键字:
兰坪盆地, 多金属矿床, 硫同位素Lanping Basin, Polymentallic Deposits, Sulfur Isotope
期刊名称:
《Open Journal of Natural Science》, Vol.4 No.1, 2016-02-19
摘要:
兰坪盆地内产有金顶铅锌矿、白秧坪银铜多金属矿床、盆地西缘脉状铜多金属矿床，为查明成矿流体的来源，对这些矿床中不同矿物中的硫同位素数据进行了分析和对比研究。金顶铅锌矿和白秧坪银铜多金属矿西矿带中硫化物的特征显示硫源为细菌还原硫酸盐及部分的有机热化学还原作用将成矿热液中的硫酸盐转化而来；白秧坪银铜多金属矿东矿带和盆地西缘脉状铜矿主要为有机热化学还原作用将热液中的硫酸盐转化为还原性硫。
Jinding lead-zinc deposit, Baiyangping silver-copper polymetallic deposit and the vein-type Cu- polymetallic deposits on the western border of the Lanping Basin are located in Lanping basin. In order to trace source of ore-fluiding, the data of sulfur isotope of different mineral in these deposits were selected to analyze. The characteristic of sulphide in Jinding lead-zinc deposit and the eastern ore-belt of Baiyangping silver-copper polymetallic deposit show that sulfur source is from bacterial sulphate reduction and partly thermochemical sulphate reduction. The characteristic of sulphide in the eastern ore-belt of Baiyangping silver-copper polymetallic deposit and the vein- type Cu-polymetallic deposits on the western border of the Lanping Basi show that sulfur source is from thermochemical sulphate reduction.