贵州大竹园铝土矿床地质特征及成因初探  

Geological characteristics and preliminary study on genesis of Dazhuyuan Bauxite Ore Deposit in Guizhou Province

作　　者：李洪梁[1,2] 翁申富[3] 卿成实[2] 肖禹[1] 代作文 韩飞[1] 

机构地区：[1]成都理工大学地球科学学院,成都610059 [2]中国地质调查局成都地质调查中心,成都610081 [3]贵州省地质矿产勘查开发局一〇六地质队,贵州遵义563000

出　　处：《有色金属（矿山部分）》2016年第1期36-39,共4页NONFERROUS METALS(Mining Section）

基　　金：全国重要矿产和区域成矿规律研究(1212010633903)

摘　　要：大竹园铝土矿床是黔中—渝南石炭纪铝土矿成矿带内产出的大型矿床,也是在整装勘查中取得重大找矿突破的典型矿床之一。矿体主要赋存于上石炭统大竹园组(C_2d)含铝岩系中上部,呈层状、似层状产出,其厚度变化较小,矿区范围内从西向东矿体连续分布,产状与地层产状基本一致。矿石多呈块状构造,结构特征以沉积作用形成的碎屑结构、鲕粒结构为主。矿石矿物以一水硬铝石为主,脉石矿物多为高岭石、绿泥石等黏土矿物。通过对矿床地质、地球化学、古地理环境特征等进行详细分析,认为该矿床为沉积型铝土矿。The Dazhuyuan Bauxite Deposit is a large-scale deposit in the Carboniferous bauxite metallogenic belt of central Guizhou-south of Chongqing, which is one of the typical deposits that have achieved great breakthrough in assembled exploration. The orebodies mainly occurred in the middle-upper part of the Dazhuyuan Formation （C2 d）, which is served as aluminiferous rock system. It＇s bedded or quasi-bedded, and the thickness varies very little. The orebodies distribute continuously from west to east in the district with an approximately similar occurrence with the stratum. The massive structures are the main structure of the ores, while the textures are dominated by clastic texture and pebble texture which is formed by sedimentation. Ore minerals are given priority to diasporic bauxite, while the gangue minerals are mainly clay minerals, such as kaolinite and chlorite. Based on the detailed analysis of geology, geochemistry, paleogeographic environment characteristics, etc, the paper puts forward that it is a sedimentary-type bauxite deposit.

关 键 词：矿床成因 地质特征 铝土矿 务川 贵州 

分 类 号：TD15[矿业工程—矿山地质测量]