湖南石门雄黄矿区矿化角砾岩的成因类型

On the Genetic Classification of Mineralized Breccias in the Shimen Realgar Ore District Hunan Province

湖南石门界牌峪地区雄黄矿床中伴有各类矿化角砾岩。从其岩石学,岩石化学,地球化学的特征来看,它是一种由热泉气体及部分物质在封闭还原条件下产生急剧爆发形成的特殊的角砾岩群。主要成因类型为“侵人状”角砾岩、爆破角砾岩、岩溶角砾岩、崩塌角砾岩。多种角砾岩的叠加现象十分明显。它们是一种极好的容矿控矿体,具有重要的找矿意义。

In the Jiepaiyu realgar ore district, shimen County, Hunan Province, there exist a number of mineralizec breccias. Petrological,petrochemical and geochemical studies indicate that the mineralizedbreccias in the area were formed a result of drastic explosions of hot sping gases and related substance under the sealed and reduced conditions. There are four genetic types of mineralized breccia related to realgar deposits in the Jiepaiyu area,i,e. "intrusive" .explosive,karst and collapse breccias. The superposition of various baccias is quite conspicuous.They are good ore-hosting and controlling bodies and hence have important significance for ore prospecting.