摘要
桂西铝土矿有原生沉积型和堆积型两种矿床类型,它们关系密切。对铝土矿及其围岩系统取样,进行稀土元素分析。结果表明,原生铝土矿的成矿母岩主要为下二叠统茅口灰岩,其次有少量古陆风化物的加入;原生铝土矿形成于海相的沉积环境,堆积型铝土矿由原生沉积型铝土矿风化淋滤而成。
Primary and cumulated type bauxite deposits occur in the western Guangxi district, there is a relationship between these two type bauxite deposits. Some samples of bauxites and wall-rocks are collected and measured for REE. It has been shown that the metallogenic parent rocks for primary bauxite are Maokou Formation limestone of lower Permian period, and partially added by old weathered materials. The primary bauxite was formed in a marine sedimentary surrounding and cumulated bauxite was derived from weathering-leaching of primary bauxite.
出处
《地质与勘探》
CAS
CSCD
北大核心
2003年第4期1-5,共5页
Geology and Exploration
基金
广西壮族自治区勘探基金项目(编号:DKJ-028)资助。
