摘要
车穷卓布锑矿床位于藏南金锑成矿带东南部,矿体赋存于下侏罗统日当组地层中,钙质板岩是其主要的围岩。矿体严格受近南北向断裂控制,呈脉状、透镜状产出。矿石硫化物硫同位素δ^(34)S_(V-CDT)值在-1.70‰～0.90‰之间,平均值为0.30‰,与岩浆硫同位素特征相似。矿石硫化物铅同位素^(206)Pb/^(204)Pb变化范围为18.970～19.134,平均值为19.051;其^(207)Pb/^(204)Pb变化范围为15.689～15.709,平均值为15.707;其^(208)Pb/^(204)Pb变化范围为39.342～39.441,平均值为39.402。铅同位素具有上地壳来源的特征,与变质结晶岩系相似,指示变质结晶岩系及与之相关的淡色花岗岩与锑成矿作用密切相关。
The Cheqiongzhuobu antimony deposit is located in the southeast of the Au-Sb metallogenic belt in southern Tibet. The ore body is hosted in the Lower Jurassic Ridang Formation, and calcareous slate is the major host rock. The ore bodies are lenticular, vein, and controlled by S-N trending faults. The sulfur isotopes of ore sulfides δ34SV-CDT range from-1.70‰ to 0.90‰, with an average of 0.30‰, which is similar with the characteristics of sulfur isotope of magma. 206Pb/204Pb isotope compositions of sulfides range from 18.970 to 19.134, with an average of 19.051. 207Pb/204Pb isotope compositions of sulfides range from 15.689 to 15.709, with an average of 15.707. 208Pb/204Pb isotope compositions of sulfides range from 39.342 to 39.441, with an average of 39.402. Pb isotope indicates that ore material is derived from the upper crust, and has similar characteristics with metamorphic crystalline rock series, suggesting that the metamorphic crystalline rock and associated leucogranites in southern Tibet are closely related to Sb mineralization.
作者
邓舟
张刚阳
郑有业
陈友良
DENG Zhou;ZHANG Gangyang;ZHENG Youye;CHEN Youliang(College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China;Tibet Huayu Mining Co., Ltd., Lhasa 850032, China;Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2019年第3期337-345,共9页
Journal of Hefei University of Technology：Natural Science
基金
国家重点研发计划资助项目(2017YFC0601505)
国家自然科学基金资助项目(41302066)
西藏华钰矿业股份有限公司博士后基金资助项目(80303-SHX070)
成都理工大学中青年骨干教师培养计划资助项目(KYGG201402)
国土资源部构造成矿成藏重点实验室开放基金资助项目(GZCK2012002)
"构造成矿学理论发展与实践"四川省省属高校科研创新团队资助项目(13TD0008)
关键词
车穷卓布锑矿床
成矿物质来源
硫铅同位素
Cheqiongzhuobu antimony deposit
origin of ore-forming material
S-Pb isotope
