黔北道真新民铝土矿矿床地质特征及控矿因素探讨  

Geological Characteristics and Ore-Controlling Factors of the Xinmin Bauxite Deposit in Daozhen County, Northern Guizhou Province

作　　者：莫光员 金中国 龚和强[2] 吴启美[3] 

机构地区：[1]贵州省有色金属和核工业地质勘查局,贵阳550005 [2]贵州省国土资源厅,贵阳550004 [3]南开大学环境科学与工程学院,天津300071

出　　处：《地质科技情报》2013年第1期40-45,共6页Geological Science and Technology Information

基　　金：贵州省地勘基金项目"贵州务正道地区铝土矿基础地质与成矿规律研究"

摘　　要：黔北道真新民铝土矿矿床是务正道地区近年来探明的第4个大型铝土矿床,332+333铝土矿资源量超过数千万t。研究表明,矿床为产于上石炭统黄龙组灰岩古侵蚀风化面或中下志留统韩家店组泥质岩、泥岩、砂质页岩侵蚀间断面之上的一水硬铝石沉积型铝土矿床。镓、锂为矿床伴生的有益元素。矿床的形成主要受地层岩性、向斜构造、古地理环境、古气候等因素控制;后期表生作用是地表矿石质量总体上优于深部的主要因素之一。The Xinmin bauxite deposit was the forth large-sized bauxite deposit in the Wuchuan-Zheng＇an- Daozhen area, northern Guizhou Province. The total amount of 332＋333 resources are more than several million tons. Study results showed that the bauxite deposit was formed on paleo-erosion weathering sur- face of carbonate rock of Upper Carboniferous Huanglong Formation, or erosion discontinuity surface of shale, mudstone and sand shale of Middle and Lower Silurian Hanjiadian Formation. The bauxite deposit belongs to diasporite sedimentary bauxites deposit. The formation of ore deposit was controlled by forma- tion lithology, synclinal structure, paleogeographic environment and so on. The later supergenesis was one of major factors what result in the quality of ore in the surface is much better than the deep.

关 键 词：贵州 铝土矿 地质特征 控矿因素 

分 类 号：P618.45[天文地球—矿床学]