河南伊川石佛寺铝土矿地质特征及控矿因素

doi:10.13686/j.cnki.dzyzy.2022.01.005

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摘要河南伊川石佛寺铝土矿是近年在豫西地区龙门-巩义铝土矿成矿带新发现的中型铝土矿床之一.矿床含矿岩系为上石炭统本溪组中下部，铝土矿呈层状产于寒武系崮山组碳酸盐岩古风化剥蚀面，与上覆太原组整合接触.矿床赋存的本溪组从下而上分别由含铁黏土岩和铝土矿层组成.铝土矿体直接顶板为一₁>煤，厚约0.80~1.60 m；直接底板为高铁铝质黏土岩，厚1.40~3.50 m.矿石自然类型主要为豆鲕状铝土矿和碎屑状铝土矿及其混合类型.铝土矿物主要为一水硬铝石，并普遍含镓元素，可综合回收利用.矿床的形成主要受地层、古构造、岩相古地理、古气候及风化作用等因素控制，成因类型为古风化壳沉积型.

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	吴煜
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	李新萍

关键词 ：控矿因素, 矿床成因, 铝土矿, 上石炭统, 河南省

Abstract：The Shifosi bauxite deposit in Yichuan is one of the medium-sized bauxite deposits newly discovered in Longmen-Gongyi bauxite metallogenic belt in western Henan Province, with the ore-bearing rock series in the middle and lower part of Upper Carboniferous Benxi Formation. The bauxite deposit is occurred on the ancient weathered denudation surface of carbonate rocks of Cambrian Gushan Formation, which is in conformable contact with the overlying Taiyuan Formation. The Benxi Formation is composed of iron-bearing clays and bauxite layers from bottom to top. The immediate roof of bauxite orebody is I₁ coal seam with a thickness of 0.80-1.60 m, and the immediate floor is high ferrallitic clay rock of 1.40-3.50 m thick. The natural types of ores are mainly oolitic, clastic bauxites and their mixtures, with the main bauxite mineral of diaspore, generally containing gallium, which is recyclable. The mineralization is mainly controlled by strata, paleostructure, lithofacies paleogeography, paleoclimate and weathering, genetically belonging to paleo-weathering crust sedimentary type.

Key words： ore-controlling factor deposit genesis bauxite Upper Carboniferous Henan Province

收稿日期: 2021-01-18

PACS:

P618.45

基金资助:2017年度河南省财政地质勘查基金项目"河南省伊川县魏瑶-石佛寺铝（黏）土矿预查"（豫国土资发[2017]22号-5）.

通讯作者: 夏炎(1990-),男,工程师,从事矿产勘查工作,通信地址河南省洛阳市洛龙区开元大道地矿大厦,E-mail//77301329@qq.com E-mail: 77301329@qq.com

作者简介: 吴煜,(1986-)男,硕士,工程师,从事区域地质调查及矿产勘查工作,通信地址河南省洛阳市洛龙区开元大道地矿大厦,E-mail//77301329@qq.com

引用本文:

吴煜, 夏炎, 王振强, 豆靖涛, 薛志强, 李新萍. 河南伊川石佛寺铝土矿地质特征及控矿因素[J]. 地质与资源, 2022, 31(1): 38-46.
WU Yu, XIA Yan, WANG Zhen-qiang, DOU Jing-tao, XUE Zhi-qiang, LI Xin-ping. GEOLOGICAL CHARACTERISTICS AND ORE-CONTROLLING FACTORS OF SHIFOSI BAUXITE DEPOSIT IN YICHUAN COUNTY, HENAN PROVINCE. GEOLOGY AND RESOURCES, 2022, 31(1): 38-46.

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http://manu25.magtech.com.cn/Jweb_dzyzy/CN/10.13686/j.cnki.dzyzy.2022.01.005 或 http://manu25.magtech.com.cn/Jweb_dzyzy/CN/Y2022/V31/I1/38

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