二叠系龙潭煤系与黔西南金矿的关系研究  

Study on relationship between Permian Longtan coal system and Southwest Guizhou gold deposit

作　　者：黄建国[1] 郝家栩 张敏[3] 张竹如[3] 

机构地区：[1]西南科技大学环境与资源学院 [2]贵州地质调查院 [3]贵州大学资源与环境工程学院

出　　处：《黄金》2008年第8期10-14,共5页Gold

基　　金：中国科学院矿床地球化学开放研究实验室资助

摘　　要：贵州最富的特大型微细浸染型金矿（水银洞金矿）产于上二叠统龙潭组中。龙潭组厚度为230-420m，含丰富的玄武质、凝灰质及硅质岩等，金平均丰度为250×10^-9；沉积在大陆向海洋过渡的环境，沉积期伴随有西部峨眉山玄武岩的喷发及同生断裂控制的热水沉积，形成与煤系沉积相伴的特殊含金建造。此层位中金矿床（点）发现的频率较高，具有较大的找矿前景。In Guizhou, the richest micro-fine disseminated gold deposit-Shuiyindong gold deposit-is in Longtan Formation of the upper Permian. The thickness of Longtan Formation is 230 -420m, and it contains lots of basaltic, tuffaceous, siliceous rock and so on. Average grade of Au is 250×10^-9 The depositional environment is the transitional faces from continent to ocean. The eruption of western Emeishan basalt and thermal water deposit controlled by contemporaneous fault accompanied with the period. All these functions make the special gold-bearing formation which is syndepositional with coal system. The frequency of the gold deposit（ mineral occurrence） being discovered is very high in this layer, and there will be bigger prospecting foreground.

关 键 词：含金建造 微细浸染型金矿 上二叠统龙潭组 黔西南 

分 类 号：P618.51[天文地球—矿床学]