Keywords
Orebody characteristics
Ore-control factors
Metallogenic pattern
Submitted : 2024-10-08
Accepted : 2024-10-23
Published : 2024-11-07
Abstract
Bauxite is located in the lower part of the Benxi Formation, and the prospecting project shows that the distribution of bauxite ore bodies in the area is discontinuous, and there are differences in the thickness of the ore bodies. To have a clearer understanding of the bauxite ore bodies and metallogenic pattern in the census area, this study has made use of the prospecting project data, sample analysis results, etc., and combined with the geological and tectonic background of the area, the stratigraphic spreading characteristics of the bauxite ore body spatial spreading, ore characteristics and ore controlling factors in the area have been explored and researched. The bauxite ore bodies in the study area are stratified but the ore-bearing rock system is influenced by the Ordovician paleokarst geomorphology and intermittently distributed horizontally, which can be distinguished into three different ore bodies. The bauxite ore body and Shanxi-style iron ore are associated with hard clay ore, in which the ore minerals are mainly monohydrate duralumin. The natural ore type can be divided into dense bauxite and oolitic bauxite. Bauxite in this area mainly originated from the basal Ordovician carbonate rocks, with a combination of iron-rich and aluminum-rich layers, and is a typical carbonate rock sedimentary deposit of ancient weathering crust.
References
Mameli P, Mongelli G, Oggiano G, et al., 2007. Geological, Geochemical and Mineralogical Features of some Bauxite Deposits from Nurra (Western Sardinia, Italy): Insights on Conditions of Formation and Parental Affinity. International Journal of Earth Sciences, 96(5): 887–902. https://doi.org/10.1007/s00531-006-0142-2
Lin LB, Chen YQ, Dan Y, et al., 2011, Development Characteristics of the Xujiahe Formation Bauxite in the Northeast of Sichuan Basin and Its Response to Structural Movement. Acta Petrologica Sinica, 27(8): 2392–2402. https://doi.org/10.1007/s12250-011-3157-6
Du YH, Yu WH, 2020, Land Surface Leaching Mineralization of Sedimentary Bauxite Deposits: Also on the Genetic Classification of Bauxite Deposits. Journal of Paleogeography, 22(5): 812–826. https://doi.org /10.1016/j.oregeorev.2020.103832
Liu CL, 1987, Bauxite Deposits Genesis in China. Science in China B, 1987(5): 535–544.
Sun L, Xiao KY, Lou DB, 2018, Prediction and Evaluation of Bauxite Resource Potential in China. Geological Frontiers, 25(3): 82–94.
Du YH, Zhou Q, Zhang LC, et al., 2020, Major Geological Events and Large-scale Sedimentary Mineralization. Journal of Paleogeography, 22(5): 807–811. https://doi.org/10.7605/gdlxb.2020.05.055
Zhang HK, Hu P, Jiang JS, et al., 2021, Distribution Characteristics, Main Types, and Exploration and Development Status of Bauxite Deposits. China Geology, 48(1): 68––81. https://doi.org /10.12029/gc20210105
Xu LG, Sun L, Sun K, 2023, Metallogenic Laws, Key Scientific Issues, and Research Methods of Bauxite Deposits in China. Mineral Geology, 42(1): 22–40.
Yu WC, Du YS, Zhou Q, et al., 2012, Biomarkers of Bauxite-bearing Strata and its Geological Significance in Wuchuan-Zheng’an-Daozhen Area, Northern Guizhou Province. Geological Science and Technology Information, 14(5): 651–662. https://doi.org/10.1016/j.gexplo.2021.106849
Yu WC, Algeo TJ, Yan JX, et al., 2019, Climatic and Hydrologic Controls on Upper Paleozoic Bauxite Deposits in South China. Earth-Science Reviews, 2019(189): 159–176. https://doi.org/10.1016/j.earscirev. 2018.06.014
Zhao J, Zhang SQ, Zhong ZH, et al., 2016, The Study of Geological Characteristics of Sulfur Element Distribution and Metallogenic Environment on Bauxite Deposit of Zhanjiayan in Xing County, Shanxi Province Geological. Geology Survey and Research, 39(4): 279–284. https://doi.org/10.3969/j.issn.1672-4135.2016.04.006
Zhang SQ, Zhang WX, Zhong ZH, et al., 2018, REE Geochemical Characteristics and Geological Significance of Bauxite from Xing County, Shanxi Province. Journal of the Chinese Society of Rare Earth, 36(03): 338–349. https://doi.org/10.11785/S1000-4343.20180312
Ye F, Dong GC, Meng ZG, et al., 2015, Geochemical Features of Rare-earth Elements of the Bauxite Deposit in the Gaojiashan region, Shanxi Province and their Implications. Geology and Exploration, 51(3): 486–495. https://doi.org/10.1016/j.jafrearsci.2020.103974
Wang QF, Deng J, Liu XF, et al., 2016, Provenance of Late Carboniferous Bauxite Deposits in the North China Craton: New Constraints on Marginal Arc Construction and Accretion Processes. Gondwana Research, 38: 86–98. https://doi.org/10.1016/j.gr.2015.10.015