津巴布韦舒鲁圭透镜状铬铁矿成因
Contributions to Geology and Mineral Resources Research(2012)
Abstract
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。
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Key words
Sebakwian system,Balawayan system,lenticular Cr deposit,Cr alloy hydroxide,Selugwe,Zimbabwe
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