| 河南省东沟钼矿的成矿流体性质及沉淀机制探讨 |
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| 引用本文： | 游水凤,柳汉丰,刘素楠. 河南省东沟钼矿的成矿流体性质及沉淀机制探讨[J]. 中国矿业, 2014, 23(5): 90-93 |
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| 作者姓名： | 游水凤 柳汉丰 刘素楠 |
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| 作者单位： | 江西应用技术职业学院 江西赣州 341000,江西应用技术职业学院 江西赣州 341000,江西应用技术职业学院 江西赣州 341000 |
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| 摘 要： | 东沟斑岩钼矿的成矿流体早期具有高温、高盐度,晚期温度及盐度均降低的特征。主成矿阶段石英-辉钼矿阶段的形成压力为18M~95MPa,对应的成矿深度为0.7~3.7km。东沟钼矿的成矿流体含有CH4、C6H6等还原性气体,且流体的氧逸度及pH值从成矿早阶段到晚阶段具有依次降低的趋势,表明东沟钼矿的主成矿阶段,成矿流体处于一种相对还原的环境,且流体的沸腾作用是导致钼矿沉淀的重要机制之一。
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| 关 键 词： | 东沟 成矿流体 成矿压力 氧逸度 pH值 沸腾作用 |
| 收稿时间： | 2013-07-11 |
| 修稿时间： | 2013-09-03 |
Properties of ore-forming fluid and the precipitation of Mo of Donggou deposit, Henan Province. |
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| You Shuifeng,Liu Hanfeng and Liu Sunan. Properties of ore-forming fluid and the precipitation of Mo of Donggou deposit, Henan Province.[J]. CHINA MINING MAGAZINE, 2014, 23(5): 90-93 |
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| Authors: | You Shuifeng Liu Hanfeng Liu Sunan |
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| Affiliation: | Jiangxi vocational College of Applied Technology,Ganzhou,Jiangxi vocational College of Applied Technology,Ganzhou,Jiangxi vocational College of Applied Technology,Ganzhou |
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| Abstract: | The ore-forming fluids of Donggou Mo deposit physical-chemically changed from high temperature and salinity of the earlier stages to low temperature and salinity of the later stages. The mineralization pressure and depth of the quartz-molybdenite stage are from 18 to 95MPa and from 0.7 to 3.7km. The low content ofSCH4 and C6H6, and the oxygen fugacity, pH values and Eh values decreased from early stage to the late stage, suggesting a weakSreducing environment when the Mo elements precipitating. The boiling of the fluid may change the physicochemical properties of ore-forming fluid and resulted in the precipitation of Mo. |
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| Keywords: | Donggou, ore-forming fluid, pressure of ore formation, oxygen fugacity, pH values, boiling |
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