Abstract
Weathering on metabasic sequence of the Serrado Itaberaba amphibolites led to bauxite formation in top and upper slopes topographic positions. This article deals with mineralogical and geochemical aspects of the fresh rock and its weathering products: bauxite and clay. Microscopic and X-ray diffraction studies indicate that the fresh rock is formed mainly by hornblende, plagioclase and quartz and that gibbsite, kaolinite and goethite are the main phases present in weathered products. The relationship between primary and secondary minerals is discussed. From a geochemical point of view, the bauxitization led to a depletion in Fe, Si, Ca, K, Mg, Mn, P, B, Ba, Be, Cu, La, Li, Mo, Sr, Sn, V, Y, Zn and Zr and an enrichment in Al, Pb, Co, Cr. REE except Ce, are generally depleted in weathered products. The similarities and differences in the elements behaviour during lateritization was investigated by factor analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
