| 四川大岩子铂-钯矿床(点)热液成矿的地球化学证据 |
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| 关键词:Pt-Pd deposit hydrothermal mineralization geochemical evidence Dayanzi Sichuan |
| 基金项目:国土资源地质调查项目（编号：200310200002）;国土资源部“九五”一般科技项目（编号：992034） |
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| Geochemical Evidence for Hydrothermal Mineralization of the Dayanzi Pt-Pd Deposit in Huili County, Sichuan Province |
| The rocks in the Dayanzi Pt-Pd deposit are mainly dolomitite as well as pyroxenite and diabase veins. The orebodies occur in the tectonic altered and shattered zone between the dolomitite and the pyroxenite vein, mostly on the dolomitite side of the exocontact zone and subordinately in pyroxenite of the endocontact zone. As a result, there exist two types of ores: mineralized dolomitite and mineralized pyroxenite. According to geochemical characteristics of mineralized dolomitite, mineralized pyroxenite, diabase and fault gouge,it is considered that the formation of the Dayanzi Pt-Pd deposit experienced ultra-mafic magmatic intrusion (forming pyroxenite), mafic magmatic intrusion (forming diabase) and postmagmatic hydrothermal activity (forming Pt-Pd hydrothermal deposit), resulting in the formation of Pt-and Pd-bearing ore minerals rich in As, Cu, Sb, Ag and Cd. Pt and Pd mineralization is rela-ted to the postmagmatic hydrothermal activity. |
| CHENG Hang-xin,ZHAO Chuan-dong,ZHUANG Guang-min,LIU Ying-han,ZHANG Qin,ZHAO Zhi-gang.2005.Geochemical Evidence for Hydrothermal Mineralization of the Dayanzi Pt-Pd Deposit in Huili County, Sichuan Province[J].Acta Geoscientica Sinica,26(4):337-342. |
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