| 我国含银夕卡岩矿床的分布和地质特征 |
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| 引用本文：.2001.Distribution and Geological Characteristics of Silver Skarn Deposits in China[J].Mineral Deposits,20(2):153~162 |
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| 基金项目:国家自然科学基金资助项目（40073016） |
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| 中文摘要:含银夕卡岩矿床在我因银矿床中占有重要位置，它们主要分布于南岭、长江中下游、华北地台北缘和东南沿海等一些重要褶皱带中，其控矿地层较多，其中以石炭系炭—二叠系最重要。与成矿有关的岩浆岩为燕山期壳源重熔型中酸性和酸性浅成侵入岩，次为华力西期和印支期。Ag(Pb，Zn)矿化与锰质夕卡岩紧密伴生，往往产于离岩体接触带有一定距离的碳酸盐岩围岩中，并常与含Fe，Cu，Au，W，Sn钙（镁）夕卡岩构成明显的交代矿化分带，成为重要的找矿标志。 |
| 中文关键词:夕卡岩银矿床 分布 地质特征 中国 |
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| Distribution and Geological Characteristics of Silver Skarn Deposits in China |
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| Abstract:Silver skarn deposits constitute one of the major types of silver deposits in China, and their reserves account for about 22% of the total silver reserves of China. They are mainly distributed in such major fold belts of eastern China as Nanling, the middle-lower reaches of the Yangtze River and northern margin of the North China piatform. The Ag skarns :are hosted by Precambrian to Cenozoic strata, with Permian-Carboniferous being most important. The related intrusives are mainly hypabyssal calc-alkaline intermediate-acid and acid stocks of "S" type, mostly Yanshanian in age. The Ag (Pb, Zn)-beanng skarns belong to the manganoan skarn formation, and consist of Mn-hedenbergite, Mn-diopside, johannsenite, bustamite, thodonite, spessartine, tephroite, Mn-actinolite etc. They occur in distal part of the exocontact zone and are usually associated with Fe, Cu, Au, W, Sn-bearing calcic (or magnesian) skarns, making up obvious mineralized metasomatic zoning which can be used as important ore-searchirig indicators for skarn mineralizations. |
| keywords:silver skarn deposits, distribution, geological characteristics, China |
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