河南省新安县孙坑铝土矿地质特征及成矿物质来源分析

Analysis of metallogenic material source and geological characteristics of Sunkeng bauxite deposit in Xin′an County of Henan Province

新安县孙坑铝土矿主要赋存于中石炭统本溪组中,矿石类型主要是一水硬铝石型铝土矿。笔者通过在该区进行地质工作,对该地区铝土矿的基本地质特征进行了阐述。对采取的铝土矿样品进行稀土元素测试分析,认为本区铝土矿的矿源物质主要来源于底板灰岩的风化碎屑。结合底板灰岩物质来源,表明铝土矿中的稀土元素具有一定的继承性。

Xin＇an County Sunkeng bauxite deposit is mainly hosted in the Middle Carboniferous Benxi Formation, and the major ore is a diaspore type. Based on the geological survey, the paper expounds the basic geological characteristics of bauxite in this area. The rare earth elements in bauxite samples are analyzed. It is believed that the source material of bauxite in this area is mainly derived from the weathering fragment of the bottom limestone. Combined with the material source of the bottom limestone, the rare earth elements in bauxite have a certain inherited feature.