河南理工大学学报（自然科学版）2018，Vol.37Issue(2)：44-52,9.DOI:10.16186/j.cnki.1673-9787.2018.02.007
豫西偃师-龙门地区铝土矿三水铝石的赋存特征及成因分析
Occurrence characteristics and genesis of the gibbsite in bauxite in Yanshi-Longmen area, western Henan province
摘要
Abstract
Gibbsite is newly discovered in the surface outcrop of the Benxi Formation in Yanlong area,western Henan province.The discovery provides direct evidence for the existence of karst accumulated bauxite,and also has significance theoretical values for analyzing its characteristics and genesis.The newly discovered gibbsite mainly occurred in the white and red sedimentary bands that is convergence zone of Majiagou Formation limestone,Benxi Formation and variegated bauxitic mudstone of Benxi Formation.X-Ray diffraction analysis,differential thermal analysis and SEM-EDS analysis were conducted to those above-mentioned sedimentary bands and bauxitic mudstone.The results show that the gibbsite has typical X-Ray diffraction characteristic peaks and differential thermal absorption peaks of gibbsite,which appers banded structure at macro level and compact aggregates at microscopic level.Based on the principles of soil geochemistry,we conclude that the gibbsite is the mineral of the ferrallitization after Benxi Formation bauxite was uplifted to the surface.关键词
铝土矿/三水铝石/成因/本溪组/豫西Key words
bauxite/gibbsite/genesis/Benxi Formation/western Henan province分类
矿业与冶金引用本文复制引用
曹高社,毕景豪,邢舟,杜欣,周红春,陈永才..豫西偃师-龙门地区铝土矿三水铝石的赋存特征及成因分析[J].河南理工大学学报（自然科学版）,2018,37(2):44-52,9.基金项目
国土资源部全国油气资源战略选区调查与评价项目(1211302108023-2) （1211302108023-2）
河南省两权价款项目(20111-36-8) （20111-36-8）
