云南省文山天生桥-者五舍沉积型铝土矿成矿 地质特征及找矿前景研究

Ore-forming Geological Characteristics and Ore-searching Prospect of the Tianshenqiao-Zhewushe Sedimentary Bauxite Deposit in Wenshan County,Yunnan Province

天生桥沉积型铝土矿属中型规模铝土矿矿床,是目前文山地区发现的品质最好,可利用矿体资源最大的沉积型铝土矿,矿体位于塘子边向斜的西翼,赋存与上二叠统龙潭组地层内,矿石中主要矿物有一水硬铝石、软水铝石、锐钛矿、黄铁矿、赤铁矿、高岭石、云母,矿石结构以团粒、砂屑结构为主,通过分析矿区内干塘子、天生桥两个矿段的成矿地质特征,指出塘子边向斜东翼者五舍矿段具有较大铝土矿找矿远景和资源潜力。

The Tianshenqiao sedimentary bauxite is a medium-size bauxite,and is the best quality bauxite deposit with largest usable resource quantity ever discovered in Wenshan area.The ore body lies on the west limb of Tangzibian syncline and occurs in Permian Longtan Formation.The main minerals in the ore include diaspore,boehmite,anatase,pyrite,hematite,kaolin and mica,and the ores are mainly of pellet and psammitic textures.Based on an analysis of the ore-forming geological characteristics of Gantangzi and Tianhshenqiao ore blocks within the ore district,this paper points out that the Zhewushe ore block on the eastern limb of Tangzibian syncline has favorable ore-searching prospect and resource potential.