江西乐平浯口膨润土矿床地质特征与控矿因素分析

Analysis of geological characteristics and ore-controlling factor of Wukou bentonite deposit in Leping,Jiangxi Province

乐平市浯口膨润土矿床位于萍乐拗陷带中,矿体赋存在浯口复式盆地上白垩统赣州组中,矿石中富含火山碎屑成分,有极少的陆源岩屑,成矿母岩为中酸性玻屑凝灰岩,火山碎屑物质就地或短距离搬迁沉积而成。矿体产出严格受地层层位控制,岩浆岩、火山岩为成矿提供了物质来源。综合分析认为:本矿床属陆相-火山沉积型矿床。本区找矿工作可在浯口向斜南部开展地质找矿工作,寻找新的矿体,扩大远景。

Wukou bentonite deposit in Leping City is located in the Pingle depression zone,and the ore body is hosted in the Upper Cretaceous Ganzhou formation in Wukou complex basin.The ore is rich in volcanic debris,and there are very few land-source debris.The ore-forming parent rock is medium-acid glassy tuff.The volcanic debris is deposited in situ or in a short distance.The output of ore body is strictly controlled by the strata,and magmatic rocks and volcanic rocks provide material sources for mineralization.Based on comprehensive analysis,it is considered that this deposit belongs to a continental-volcanic sedimentary type.Geological prospecting work can be carried out in the south of Wukou syncline,where it is easier to look for new ore bodies and expand prospecting perspective.