| 铬的迁移形式、成矿机理新探 |
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| 引用本文： | 郑大中,郑若锋.铬的迁移形式、成矿机理新探[J].地质找矿论丛,2012,27(1):1-8. |
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| 作者姓名： | 郑大中 郑若锋 |
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| 作者单位： | 成都综合岩矿测试中心,成都,610081 |
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| 摘 要： | 通过对地球深部富氢流体、若干金属氢化物及合金氢化物的形成条件与性质、铬矿物的化学成分及其共生伴生矿物的研讨,结合铬铁矿成矿的地质背景,认为铬氢化物、铬合金氢化物是铬成矿的主要迁移形式。它们从地球深部富氢强还原环境随岩浆迁移至地壳浅部,由于H2,CO,CH4等逃逸、氧化,氧逸度大增,温度、压力下降,铬氢化物和铬合金氢化物分解、氧化、固化富集成铬矿床。
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| 关 键 词： | 铬氢化物 铬合金氢化物 迁移形式 氧化固化富集 铬矿床 |
| 收稿时间： | 2010/5/10 0:00:00 |
Discussion on a new mechanism of Cr transportation |
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| ZHENG Da-zhong
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ZHENG Ruo-feng.Discussion on a new mechanism of Cr transportation[J].Contributions to Geology and Mineral Resources Research,2012,27(1):1-8. |
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| Authors: | ZHENG Da-zhong ZHENG Ruo-feng |
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| Institution: | (Chengdu Sichuan Province Departmental Comprehensive Rock Testing Center,Chengdu 610081,China) |
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| Abstract: | Based on study on nature of hydrogen-rich fluid,some metallic hydrides and metallic hydride alloy to depth of the earth and their formation conditions and chemical composition of Cr minerals and the acompanying minerals and Cr ore-forming background we consider that Cr is mainly transported in Cr hydrides and Cr hydride alloy in the metallogenic prosess.The Cr hydrides and Cr hydride alloy migrate together with magma from strong hydrogen-rich environment at depth of the earth to shallow crust and pressure decreases due to escape of H2,CO,CH4 then Cr hydrides and Cr hydride alloy are decomposed,oxidized,solidified and enriched to Cr ore deposit. |
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| Keywords: | Cr hydride Cr hydride alloy transportation form oxidation-solidification-enrichment Cr ore deposit |
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