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地质特征广西上二迭统底部的铝土矿,产在下二迭统茅口阶灰岩起伏不大的侵蚀面上,与粘土矿、黄铁矿、煤层密切伴生,构成独特的矿床组合(总厚2.4～19米,局部达30多米),与下伏茅口灰岩呈假整合接触,严格受古地理环境、基底平缓凹陷构造中的岩溶地形控制.在岩溶凹陷稍深、含矿层厚度较大的地段,其底部有时见有O.7～5.4米的粘土矿(岩),而多数情况下发育的是黄铁矿(厚0.1～3.7米)或富含黄铁矿的铝土页岩及铝土岩.其上依次为铝土矿(0.19～23.7米)、黄铁矿(O.6～2.1米)或含黄铁矿的
Geological features Bauxite at the bottom of the Upper Permian in Guangxi is produced on the erosion surface of the Lower Second Permian Maokou limestone and is closely associated with the clay, pyrite and coal seams to form a unique deposit combination Thickness of 2.4 to 19 meters, local up to 30 meters), and under the Maokou limestone was false integration contact, strictly by the paleogeographic environment, the basement of the karst topography of the depression-controlled structure in the karst depression slightly deeper than the thickness of the ore-bearing layer In large areas, clay minerals (rocks) sometimes range from 0.7 to 5.4 meters at the bottom, while pyrite (0.1 to 3.7 meters) or pyrite-rich bauxite shale And bauxite, followed by bauxite (0.19 ~ 23.7 m), pyrite (0.6 ~ 2.1 m) or pyrite