Resource Distribution And Exploitation Strategy Of The Bauxite Deposits In The Henan Province, China

Distribution of bauxite resources and the aluminum industry in Henan are much developed. To explore the resources of bauxite in Henan Province of the geological background, control factors and the prediction method to study the current status of bauxite resources development issues in Henan and is more important to further exploration and development. This paper discusses the basic status of the aluminum industry in Henan and problems; detailed study of the geological characteristics of the ore deposits, ore minerals and geochemical compositions, analysis of the regional metallogeny and ore-controlling factors, the initial exploration of the geochemical dispersion pattern of bauxite and regional metallogenic potential; finally, we discuss strategic issues of the exploration and development. The main knowledge including:(1) Analysis of the regional metallogeny and controlling factors. The pre-ore structure is general characterized by: southeast is higher than northwest of the overall topography, multi-level phase of the main concave terrain; influenced by topographic effects, the Late Carboniferous sedimentary sequence from the northeast to the southwest area is divided into three phases, i.e., littoral-shallow phase→littoral phase→coastal phase. Based on the sequence region observed different belt, the ore rocks within the main sequence includes a number of sediment cycles, on behalf of bauxite layer by the formation of two transgressive events.(2) Based on the geochemical data in the deep soils, shallow soils and stream sediments, geochemical disperse model for the bauxite is analyzed, so that geochemical anomalies can be used as predictors of bauxite. Combining lithofacies palaeogeography, topography, geochemical anomalies and other aspects of data, using weights of evidence, a preliminary analysis of the potential of the regional distribution of bauxite ore is carried out.(3) The problems in the development and utilization of bauxite resources, including inadequate reserves, small scale of development, low recovery rate of aluminum products, lack of associated minerals are proposed. Made of aluminum and coal prospecting, exploration and mining rights focus on large-scale transfer, utilization and recycling to improve the level of bauxite and effective development strategy.