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津巴布韦舒鲁圭透镜状铬铁矿成因
引用本文:王铁军,刘晓阳,林锐华,杨秀峰.津巴布韦舒鲁圭透镜状铬铁矿成因[J].地质找矿论丛,2012,27(4):485-490.
作者姓名:王铁军  刘晓阳  林锐华  杨秀峰
作者单位:1. 中钢集团天津地质研究院,天津,300181
2. 中国地质调查局天津地质调查中心,天津,300171
摘    要:通过对津巴布韦舒鲁圭透镜状铬铁矿地质背景、构造控矿特征、矿体赋存空间特征、蚀变岩组合、矿石结构构造特征的总结分析,提出舒鲁圭铬铁矿流体成矿假说,认为太古宙超基性杂岩侵入的同时,富含铬合金氢化物的H2-CH4超临界流体沿构造带侵入到地壳浅部,并与构造带内水混合,水与铬合金氢化物发生化学反应,产生的铬尖晶石沉淀在构造带内,形成透镜状铬铁矿体。

关 键 词:透镜状铬铁矿  铬尖晶石  铬合金氢化物  塞巴奎系  布拉瓦约系  舒鲁圭  津巴布韦
收稿时间:2012/11/16 0:00:00
修稿时间:2012/11/20 0:00:00

Genesis of lenticular Cr deposits in Selugwe, Zimbabwe
WANG Tie-jun,LIU Xiao-yang,LIN Rui-hua and YANG Xiu-feng.Genesis of lenticular Cr deposits in Selugwe, Zimbabwe[J].Contributions to Geology and Mineral Resources Research,2012,27(4):485-490.
Authors:WANG Tie-jun  LIU Xiao-yang  LIN Rui-hua and YANG Xiu-feng
Institution:1(1.Sinosteel Tianjin Geological Academy,Tianjin 300181,China; 2.Tianjin Geological Survey Center of Geological Survey Bureau of China,Tianjin 300171,China)
Abstract:Based on geological background, structure-control characteristics, spatial location, altered rock assemblage, ore structure and texture of Cr deposits in Selugwe area a hypothesis is put forward that the deposits are formed by supercritical fluid of H2-CH4. During intrusion of Archean ultra-basic complex the H2-CH4-rich supercritical fluid moved to shallow crust along structural zone and incorporated with water and Cr-spinel is formed from reaction of H2-CH4 with water as the lenticular Cr deposits.
Keywords:lenticular Cr deposit  Cr alloy hydroxide  Balawayan system  Sebakwian system  Selugwe  Zimbabwe
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