Abstract In the course of additional exploration of the lower horizons of the unique Sangaredi deposit in West Africa, nonlaterized deposits of the Sangaredi series of all major lithological types were found. The lithological composition of redeposited bauxitized deposits of the Sangaredi series varies from conglomerate- and gritstone–bauxites to sandstone-like and clayey bauxites, which facially represent water-sedimentary (alluvial and lacustrine) continental deposits. The appearance of such a propitious redeposited parent substrate predetermined the formation of sedimentary-lateritic bauxites as a result of subsequent laterization. In this article the main processes are characterized and the stages of the formation of extra-quality bauxites of the unique Sangaredi deposit are substantiated.

中文翻译：

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独特的铝土矿 Sangaredi 矿床形成的主要过程和阶段（西非）

摘要 在对西非独特的Sangaredi 矿床的下层进行额外勘探的过程中，发现了所有主要岩性类型的Sangaredi 系列的非地层矿床。Sangaredi 系列再沉积铝土化矿床的岩性组成从砾岩和砂岩铝土矿到砂岩和粘土状铝土矿，表面上代表水沉积（冲积和湖相）陆相矿床。这种有利的再沉积母体基底的出现，预示了沉积红土铝土矿的形成，这是随后红土化的结果。在本文中，对主要过程进行了描述，并证实了独特的 Sangaredi 矿床的优质铝土矿的形成阶段。