河南省渑池县关底沃地区铝土矿床地质特征及矿床成因研究  

Study on geological characteristics and genesis of deposit in Guandiwo area,Mianchi County,Henan Province

作　　者：陈勇 冯阳光 董化祥 孔琪 CHEN Yong;FENG Yangguang;DONG Huaxiang;KONG Qi(The Sixth Geological Brigade of Henan Nonferrous Metal Geology and Mineral Resources Bureau,Zhengzhou 450000,Henan,China)

机构地区：[1]河南省第六地质大队有限公司,河南郑州450000 [2]河南省资源环境调查二院有限公司,河南郑州450000

出　　处：《矿产勘查》2024年第S2期432-438,共7页Mineral Exploration

基　　金：河南省地勘基金项目(豫国土资发【2016】46号)资助。

摘　　要：研究区位于华北陆块南部隶属于陕县—渑池—新安县成矿带,铝土矿富集程度高,在河南省铝土矿带中占据着举足轻重的地位。本文通过河南西部铝土矿带地质特征及成矿规律研究,总结出石炭纪本溪组地层是河南西部铝土矿的最主要的赋存地层。该矿床属于古风化壳型(也可称为沉积型)铝土矿矿床,矿床的控制因素主要是长期沉积间断形成的岩溶洼地,另外还受古构造、古气候和古地理影响。基底碳酸盐区岩溶化成岩溶洼地为矿床形成提供有利空间。通过对铝土矿床的控矿因素的研究,为该区域铝土矿找矿突破提供理论依据。This deposit is located in the southern part of the North China Block and belongs to the Shaan County-Mianchi-Xin'an County metallogenic belt.It has a high degree of bauxite enrichment and is an important bauxite rich ore belt in Henan Province.This article adopts various geological research methods,including geologi-cal exploration,drilling verification,and rock mineral testing to study.Based on the geological characteristics of the bauxite belt in western Henan,it is believed that the Carboniferous Benxi Formation is the main occurrence layer of bauxite in western Henan.The deposit belongs to the ancient weathering crust type(also known as sedi mentary type)bauxite deposit,and the controlling factors of the deposit are mainly karst depressions for med by long-term sedimentary discontinuities.In addition,it is also influenced by ancient structures,ancient climate,and ancient geography.The dissolution of carbonate rocks in the base ment into karst depressions provides favor-able space for the for mation of mineral deposits.By studying the controlling factors of bauxite deposits,theoretical basis is provided for breakthroughs in bauxite exploration in the region.

关 键 词：铝土矿 控制因素 矿床成因 赋存地层 

分 类 号：P612[天文地球—矿床学]