| 内蒙古东伙房金矿床矿物包裹体研究和矿床成因 |
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| 引用本文： | 石准立,谢广东.内蒙古东伙房金矿床矿物包裹体研究和矿床成因[J].现代地质,1998,12(4):477-484. |
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| 作者姓名： | 石准立 谢广东 |
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| 作者单位： | China University of Geosciences，Beijing，100083 |
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| 基金项目： | 高等学校博士学科点专项科研资金 |
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| 摘 要： | 摘 要 着重研究了东伙房金矿床矿物包裹体的空间分布, 并将其用于解释矿床成因。 研究
了成矿压力场、 温度场和热液沸腾与矿质沉淀的关系, 利用矿物包裹体气相和液相成分测定
结果讨论了金的搬运形式。 论述了碱性潜火山岩正长斑岩体与成矿的关系, 指出矿床形成于
印支期地幔热柱引发的张性成矿动力学背景之下, 矿床属于和碱性岩有关的中浅成高中温热
液矿床。
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| 关 键 词： | 东伙房金矿床 矿物包裹体 碱性岩浆 热液沸腾 |
STUDY ON FLUID INCLUSIONS AND GENESIS OF DONGHUOFANG GOLD DEPOSIT, INNER MONGOLIA |
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| Shi Zhunli\ \ \ Xie Guangdong.STUDY ON FLUID INCLUSIONS AND GENESIS OF DONGHUOFANG GOLD DEPOSIT, INNER MONGOLIA[J].Geoscience——Journal of Graduate School,China University of Geosciences,1998,12(4):477-484. |
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| Authors: | Shi Zhunli\ \ \ Xie Guangdong |
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| Abstract: | Boiling inclusions are first discovered in Donghuofang gold deposit. The distributions of boiling inclusions and orebodies in vertical project indicate that abrupt decrease of ore forming pressure is the most important factor, causing boiling of ascending ore fluid along the opening fault. Boiling of ore forming fluid and decrease of the temperature made Au precipitate in the gold veins. The study on the compositions of fluid inclusions shows that the transport forms of gold in Ⅰ and Ⅱ mineralizing stages were complex Au S, but in Ⅲ mineralizing stage complex Au Cl is major form of transportation. Space time ralationship between orebodies and syenite stock, and the mineralizing thermal field of gold veins around this stock show them having similar sources. Alkali magma which formed the syenite stock was from mantle. Bimodal magmatic association in Donghuofang gold deposit shows the extensional metallogenic geodynamic related to the mantle plume, so the Donghuofang gold deposit is hypo mesothermal deposit. It is connected with alkali magma, and formed at period of India China(239 98Ma). |
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| Keywords: | Donghuofang gold deposit fluid inclusion alkaline magma hydrothermal boiling |
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