摘要
西山头铝土矿区位于平陆—夏县铝土矿成矿带内,区内本溪组为铝土矿含矿地层,主要形成于海相沉积环境中,自下而上分为铁质岩段、铝质岩段、硅(碳)质岩段。区内铝土矿体呈层状、似层状、溶斗状、透镜状产出于奥陶系古风化壳之上,是在晚石炭世海侵背景下,中条古陆上的铝硅酸盐风化壳中的富铝物质,被搬运到溶斗、溶洼等有利的成矿地带,在潮坪环境中沉积形成的,成矿过程分为母岩风化阶段、沉积成矿阶段、成岩阶段、表生阶段等四个阶段。
Xishantou bauxite mining area is located in Pinglu-Xiaxian bauxite metallogenic belt.Benxi formation is ore-bearing strata,mainly formed in marine sedimentary environment,and can be divided into ferruginous rock section,aluminous rock section and silicon(carbon)rock section from bottom to top.The bauxite ore deposit are layered,stratoid,funnel-form and lenticular.They occur on the Ordovician paleo-weathering crust.Under the background of Late Carboniferous transgression,the aluminum rich materials in the aluminosilicate weathering crust of Zhongtiao old land were transported to the favorable metallogenic zones such as funnel and thaw-depression,and formed in tidal flat environment.The ore-forming process of Xishantou bauxite deposit can be divided into four stages:Weathering stage of parent rock,sedimentary metallogenic stage,diagenetic stage and epigenetic stage.
作者
廉凯龙
赵胜利
薛磊
豆贯铭
靳妙杰
代金拴
LIAN Kailong;ZHAO Shengli;XUE Lei;DOU Guanming;JIN Miaojie;DAI Jinshuan(Shanxi Geophysical and Chemical Exploration Institute,Yuncheng 044000,China;Shandong Geo-mineral International Investment Co.,Ltd.,Ji’nan 250000,China;No.1Institute of Geology and Mineral Resources Survey of Henan,Luoyang 471012,China)
出处
《有色金属工程》
CAS
北大核心
2021年第4期96-101,共6页
Nonferrous Metals Engineering
基金
山西省2017年度地质勘查基金项目(SXZDF20170820)。
关键词
铝土矿
含矿地层
地球化学
成矿过程
bauxite
ore bearing stratum
geochemistry
metallogenic process
