| 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 |
| 津巴布韦舒鲁圭透镜状铬铁矿成因 |
| Genesis of lenticular Cr deposits in Selugwe, Zimbabwe |
| 投稿时间：2012-11-16 修订日期：2012-11-20 |
| DOI：10.6053/j.issn.1001-1412.2012.04.014 |
| 中文关键词: 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 |
| 英文关键词:lenticular Cr deposit Cr alloy hydroxide Balawayan system Sebakwian system Selugwe Zimbabwe |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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