| 姚克明,温常贵,景俊强,乔红.晋北后所金矿床地质特征及矿床成因[J].地质找矿论丛,1997,(3):58-67 |
| 晋北后所金矿床地质特征及矿床成因 |
| GEOLOGICAL CHARACTERS AND GENESIS OF HOUSHUO AU-DEPOSIT IN NORTH SHANXI PROVINCE |
| 投稿时间：1997-01-07 |
| DOI：10.6053/j.issn.1001-1412.1997.3. 007 |
| 中文关键词: 晋北后所 金矿床 地球化学 矿物包体学 |
| 英文关键词:Houshuo in north Shanxi province Au deposit geochemistry mineral inclution |
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| 中文摘要: |
| 后所金矿是产在五台群变质岩中的金矿床,有含金黄铁矿石英脉型和蚀变岩型两种矿化类型。本文论述了后所金矿的地质特征、矿物组成、微量元素、稳定同位素地球化学和矿物包体学特征,探讨了金矿的物质来源和金矿成因,指出了金矿的演化和最后定位于燕山中晚期。 |
| 英文摘要: |
| There are a large number of Au-Ag epithermal deposits which are closely related to Yansha-nian volcanic and sub-volcanic rocks in northern Shanxi province. Houshuo Au deposit is one of them. It occurs in the ductile shear zone locatecl in Wutai Group with two mineralized types,Au - bearing pyrite-quartz vein and altered one. The mineral association consists, mainly of kustelite and electrum. The country rocks were strongly altered by silicification,sericitization and carbouatization.The Pb isotope composition of ore is similar to that of the metamorphic rocks of wutai Group and the dolomite of Gaoyuzhuang Formation. indicating that the ore-forming material derived from the Pre-Cambrian strata.The geochemistry study of the inclusion of mineral indicates that the ore-forming tempeature is 190~310℃. The salinity of the ore-forming fluid is 8.35wt%, with high Na+、K+、Ca2+、Cl- and SO42-. It is concludecl that epithermal Au-deposit was formed in the process of Yanshanian tectonic-magmatism. |
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