高吊重晶石矿床地质特征及成矿环境分析  

An analysis of geological characteristics and metallogenic environment of Gaodiao barite deposit

作　　者：黄作明[1] 蔡希[1] 黄珣[1] 

机构地区：[1]贵州省地质矿产勘查开发局106地质大队,贵州遵义563000

出　　处：《矿产与地质》2015年第3期348-352,共5页Mineral Resources and Geology

摘　　要：文章论述的高吊重晶石矿床位于贵州天柱县,通过对高吊深灰色重晶石矿进行研究,发现其含有机质(炭质)、SiO2、CaCO3、黄铁矿等矿物成分,并且结合重晶石矿床的地质特征,依据相关资料得出,高吊深灰色重晶石矿是在古生界时期沿扬子地台边缘的深大断裂内,在火山热液喷发、生物聚集沉积和改造,在封闭、半封闭环境,在氧化还原界面附近,钡(Ba)与丰富的硫酸根(SO2-4)化合形成硫酸钡(BaSO4)矿床。因为重晶石矿的厚度与硅质岩厚度成正比,硅质岩是有效的找矿标志。Gaodiao barite deposit was located in Tianzhu county of Guizhou.Through studying the dark grey barite ores of Gaodiao,this paper discovered that the mineral components of the barite included organic mat-ter (carbon),SiO 2 ,CaCO 3 ,and pyrite.Moreover,based on the geological characteristics of the barite de-posit and relative data,the author believed that dark grey barite ores of Gaodiao occurred in the deep fracture along the edge of Yangtze Platform during the Palaeozoic epoch.Through volcanic hydrothermal eruption, bio-accumulation,sedimentation and reconstruction,and under the condition of closed and semi-closed envi-ronment,barium (Ba)and abundant sulfate ion(SO 2 -4 )combined to form barium sulfate (BaSO 4 )deposits in the vicinity of reduced oxidized surface.Because the thickness of barite ores was proportional to that of silicalite,the latter was an effective clue for prospecting.

关 键 词：高吊重晶石 矿床地质特征 成矿环境分析 找矿标志 

分 类 号：P619.25[天文地球—矿床学]