Based on geological background, structure-control characteristics, spatial location, alteredrnrock assemblage, ore structure and texture of Cr deposits in Selugwe area a hypothesis is put forward thatrnthe deposits are formed by supercritical fluid of H2-CH4. During intrusion of Archean ultra-basic complexrnthe H2-CH4 - rich supercritical fluid moved to shallow crust along structural zone and incorporated withrnwater and Cr-spinel is formed from reaction of H2-CH4 with water as the lenticular Cr deposits.%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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