Re–Os Isotopic Age of the Hongqiling Cu–Ni Sulfide Deposit in Jilin Province, NE China and its Geological Significance
Re–Os Isotopic Age of the Hongqiling Cu–Ni Sulfide Deposit in Jilin Province, NE China and its Geological Significance
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DOI：
10.1111/rge.12039
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发表时间：
2014-07
期刊：
影响因子：
1.4
通讯作者：
Chunming Han;W. Xiao;Guochun Zhao;B. Su;S. Ao;Ji’en Zhang;B. Wan;Zhongmei Wang;J. Ding;W. Qu;A. Du
中科院分区：
文献类型：
--
作者：
Chunming Han;W. Xiao;Guochun Zhao;B. Su;S. Ao;Ji’en Zhang;B. Wan;Zhongmei Wang;J. Ding;W. Qu;A. Du
吉林省中部红旗岭铜镍硫化物存款矿床位于中亚造山带东部。利用该存款中硫化物矿物的铼、锇同位素研究了成矿时间、锇来源及矿石金属。硫化物矿石样品中锇和锇的浓度分别为0.28-1.07 ppb和2.39-13.17 ppb。10次等时线年龄为223 ± 9 Ma，表明该区铜镍硫化物存款形成于三叠纪。187 Os/188 Os初始比值约为0.295 ± 0.019（MSWD = 1.14），硫化物矿石的δ 34 S值变化范围为-1.50 ~+3.00‰。这些数据表明，成矿物质主要来自地幔，在成矿和岩浆侵位过程中，一些地壳成分被引入成岩和成矿系统。
The Hongqiling Cu–Ni sulfide deposit in central Jilin Province is located in the eastern part of the Central Asian Orogenic Belt. Rhenium and osmium isotopes in sulfide minerals from the deposit are used to determine the timing of mineralization and the source of osmium, and ore metals. Sulfide ore samples have osmium and rhenium concentrations of 0.28–1.07 ppb and 2.39–13.17 ppb, respectively. Ten analyses yield an isochron age of 223 ± 9 Ma, indicating that the Cu–Ni sulfide deposit in the area formed in the Triassic. The initial 187Os/188Os ratio is around 0.295 ± 0.019 (MSWD = 1.14) and the δ34S values of sulfide ores vary from −1.50 to +3.00‰. These data indicate that the mineralizing materials were derived mainly from a mantle with some quantities of crustal components introduced into the rock‐forming and ore‐forming systems during mineralization and magmatic emplacement.