| 胶东乳山钠长浅粒岩型金矿床地质地球化学研究 |
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| 引用本文： | 杨敏之,黄国君.胶东乳山钠长浅粒岩型金矿床地质地球化学研究[J].地质找矿论丛,1992,7(2):1-14. |
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| 作者姓名： | 杨敏之 黄国君 |
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| 作者单位： | 冶金部天津地质研究院
(杨敏之)，冶金部天津地质研究院(黄国君) |
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| 基金项目： | 国家自然科学基金9488010 |
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| 摘 要： |
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| 关 键 词： | 金矿 矿床 地质 地球化学 浅粒岩型 |
GEOLOGY AND GEOCHEMISTRY OF ALBITE-LEPTYNITE-TYPED Au DEPOSIT IN TANGJIAGOU-LUJIA AREA, SHANDONG PROVINCE |
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| Yang Minzhi and Huang Guojun.GEOLOGY AND GEOCHEMISTRY OF ALBITE-LEPTYNITE-TYPED Au DEPOSIT IN TANGJIAGOU-LUJIA AREA, SHANDONG PROVINCE[J].Contributions to Geology and Mineral Resources Research,1992,7(2):1-14. |
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| Authors: | Yang Minzhi and Huang Guojun |
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| Institution: | Tianjin Geological Academy MMI;Tianjin Geological Academy MMI |
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| Abstract: | Alhite-leptynite-typed Au deposit is a new type recently discovered in Muping-Rushan Au ore belt. This paper presents the results of horizon, sequency, proto-rock type of the leptynite and,background, wall rock alteration, ore types, ore minerals, control factors of the deposits, and results of inclusion and isotopes. On the basis of the results ore genesis and source are drawn out. And metallogenic model of two mineralization episodes and one locality of Au ore emplacement is established, i. e. the 1st episode of regional metamorphism metallogenesis from Jiaodong Movement (2.0 Ga), Fenzishan Movement (1.6 Ga) to Penglai Movement (0.6 Ga) during which part of Au in the source bed was mobilized, transported and enriched to form as disseminated and lamellar Au-bearing pyrite albite leptynite ore body (3-7g/t); the 2nd episode of hydrothermal overprinting and reworking metallogenesis on the 1st in Cretaceous Epoch along NNE compression-torsion fractures during which Au-bearing pyrite ore veins and Au-bearing quartz ore veins (7-17g/t) were formed; and one locality is the intersection and coincidence of NEE fractures in Pre-cambrian basement and NNE compression-torsion fracture zones at continental margins.Potential targets are predicted, such as deep level of Bajia-Tangjiagou-Lujia Area, Xibo-Yinggezhuang, Wushan-Xishan Areas. Ore bodies have been encountered at deep level of Tangjmgou and Lujia by drilling. |
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