| 钨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.钨的迁移形式成矿机理新探[J].四川地质学报,2008,28(4):342-347. |
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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： | 通过对钨羰基络合物及钨合金氢化物的物理化学性质、钨矿床矿物流体包裹体的化学组成、钨矿物的化学成分、主要共生伴生矿物组合的研讨，结合钨成矿的地质背景和环境，认为钨羰基络合物及钨合金氢化物是钨的主要迁移形式。它们形成于地球深部高压、富氢、富CO的强还原环境，随着岩浆、热液、热气迁移至地壳浅部，由于压力、温度下降，氧逸度大增，H2、CO逃逸、氧化，钨羰基络合物、钨合金氢化物分解，氧化形成钨矿物，沉淀富集形成钨矿床。
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| 关 键 词： | 钨羰基络合物 钨合金氢化物 成矿机理 钨矿床 |
An Approach to Migration Forms and Ore-forming Mechanism for Tungsten |
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| ZHENG Da-zhong,ZHENG Ruo-feng.An Approach to Migration Forms and Ore-forming Mechanism for Tungsten[J].Acta Geologica Sichuan,2008,28(4):342-347. |
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| Authors: | ZHENG Da-zhong ZHENG Ruo-feng |
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| Institution: | ( Chengdu Comprehensive Rock and Mineral Testing Center, BGEEMRSP, Chengdu, Sichuan, 610081 ) |
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| Abstract: | Study of physical and chemical properties of hydroxo complex and alloy hydride of tungsten, chemical composition of fluid inclusion from W deposits, chemical composition of W minerals and mineral association in combination with geological setting suggests that tungsten was migrated as hydroxo complex and alloy hydride. They were formed under stong reduction conditions with enrichment in H and CO and high pressure in the deep Earth. W minerals and ore were deposited thanks to resolution of the hydroxo complex and alloy hydride with drop in the temperature and pressure, increase in oxygen fugacity and escape of H2 and CO during ascending of ore-bearing hydrothermal solution. |
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| Keywords: | hydroxo complex alloy hydride ore-forming mechanism W deposit |
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