摘要
在全面收集整理前人研究资料的基础上,系统开展华南不同成铝区带的铝土矿矿床床矿物组合对比工作,认为铝土矿矿床含铝岩系的演化序列与矿物组合存在一定耦合关系,不同成因类型的铝土矿矿床(沉积型、堆积型及红土型)和华南不同成铝带(黔中、渝南—黔北、滇中、滇东南—桂西、桂中)中的矿物组合存在明显差异性。沉积型矿物组合复杂,堆积型和红土型矿物组合单一。一水硬铝石是沉积型和堆积型主要铝矿物,时间上分布于石炭纪—第四纪,空间上除桂中成铝带外,黔中、渝南—黔北、滇中、滇东南—桂西成铝带均有分布;三水铝石是红土型主要铝矿物,时空上分布于第四纪桂中成铝带。高岭石时空分布广泛,是含铝岩系中主要的黏土矿物,各成矿时代和成铝带均有分布;赤铁矿分布零散,不稳定,仅在修文—清镇一带稳定存在含铝岩系底部。伊利石、绿泥石、黄铁矿和菱铁矿时空上有明显的差异性。矿物组合差异性与环境变化有密切关系。高岭石和赤铁矿指示陆相沉积环境,伊利石、绿泥石、黄铁矿和菱铁矿指示海陆过渡相沉积环境。因此,笔者等重点用华南不同成铝带和不同时代内含铝岩系中矿物组合差异约束沉积环境和铝土矿矿床成因亚类,对铝土矿矿床沉积环境的深入研究和铝土矿矿床成因亚类型划分具有一定指示意义。
Objectives:At present,the research on mineral association in aluminium-bearing rock series is mainly focused on single mining area or typical ore deposit,and there is no comparison between different ages,different aluminium-forming zones and genetic types,let alone systematic summary of the coupling relationship between mineral association characteristics and sedimentary environment.This paper focuses on the difference of mineral assemblages in different aluminium-forming zones and different ages of the aluminium-bearing rock series in South China to constrain the sedimentary environment and the genetic subtypes of bauxite,which has certain indicative significance for the further study of the sedimentary environment of bauxite and the division of the genetic subtypes of bauxite.Methods:On the basis of comprehensive collection and collation of previous research data,systematic comparison of mineral associations of bauxite deposits in different aluminium-forming zones in South China is carried out to study the evolutionary sequence and mineral associations of aluminium-bearing rock series of bauxite.Results:There are obvious differences in mineral associations between different genetic types of bauxite(Sedimentary type,Salento type and laterite type)and different aluminium-forming belts in South China Central Guizhou,South Chongqin—Northern Guizhou,Central Yunnan,Southeast Yunnan—West Guangxi and Central Guangxi).The sedimentary type mineral assemblage is complex,and the Salento type and laterite type mineral assemblage is single.Diaspore is main mineral of sedimentary type and Salento type.Diaspore is the main aluminum mineral of sedimentary type and Salento type.It is distributed in Carboniferous period and Quaternary period,except in Guizhong aluminiferous zone.Bauxite is a major laterite-type aluminum mineral,distributed spatiotemporal in the middle aluminiferous belt of Quaternary.Kaolinite are widely distributed in time and space,they are the main clay minerals in aluminum-bearing rock.It is distributed i
作者
姚兰
付勇
潘忠飞
唐波
罗木焕
罗培麒
刘国栋
杨黔闽
刘兵
段明飞
YAO Lan;FU Yong;PAN Zhongfei;TANG Bo;LUO Muhuan;LUO Peiqi;LIU Guodong;YANG Qianmin;LIU Bing;DUAN Mingfei(College of Resource and Environmental Engineering of Guizhou University,Guiyang,550025;Key Laboratory of Karst Geological Resources and Environment,Ministry of Education,Guiyang,550025)
出处
《地质论评》
CAS
CSCD
北大核心
2023年第6期2161-2178,共18页
Geological Review
基金
国家重点研发计划项目(编号:2021YFC2901905)
中国地质调查局中国矿产地质志项目(编号:DD20190379)
贵州省重大科技工程项目(编号:HZ-2022-006#)
贵州省人才基地项目(编号:RCJD-2018)
黔科合作战略找矿(编号:[2022]ZD005)
中国铝土矿地质总结研究(编号:KD-[2022]-XZ-057)的成果。
关键词
铝土矿
矿物组合
沉积环境
成因类型
矿物成因
bauxite deposites
mineral assemblage
deposition environment
genesis type
mineral genesis
