Geochemical Background of the Mianchi Bauxite Mineralization area, Henan Province

详细信息   

• 责任者：Wang Yanru(State Key Laboratory of Geological Processes and Mineral Resources ; China University of Geoscienees ; Beifing 100083 ; China) ; Wang Qingfei
• 刊名：Geology and Prospecting
• 出版年：2012
• 卷期：48(3)
• 关键词：铝土矿 ; bauxite deposit ; 河南 ; Henan Province
• 页码：p.526-532
• 图表：illus., 25 tables, 1 refs.
• 分类号：1001,1002
• issnNo：ISSN0495-5331
• isbnNo：CN11-2043/P

摘要

Spatial distribution of the ore-forming elements reflects their enrichment regularity. Based on studies of the geological setting and geochemical characteristics of the ores, this paper studies the geochemical background of the Mianchi bauxite area in Henan Province to provide guidance for the future exploration work. The bauxite occurs in the Middle Carboniferous Benxi Formation, which overlies tile unconformity upon the Middle Ordovician . The ores are enriched in A1203 , HSFE, especially in element of B, compared with the upper crust. Geochemical maps hased on element concentrations of stream sediment samples reveal that only element of B can denote the locations of the bauxite deposits. The ore deposits generally surround the margin of the area with high boron concentration. It is shown that the boron can serve as the geochemical indicator for searching for bauxite deposits.