Микробиота бокситов месторождения Ева (Гвинея-Бисау)

The important role of the biogenic factor in sedimentary ore genesis now, after more than a hundred years after the publication of V. I. Vernadsky’s and Ya. V. Samoylov’s papers, has become an indisputable fact for everyone. Discussions mainly take place as to how productive the activity of organisms was in the formation of specific exploitable minerals. In 2004, a joint monograph of Russian geologists “Biomorphic Structures in Bauxite” was published. Using the examples of dozens of deposits of a huge stratigraphic range from the Late Proterozoic age to the Quaternary period and wide geographic range (Africa, Eurasia, Australia and America), active participation of various microbial communities in the bauxite formation was shown in the monograph. This article demonstrates new results of electron microscopic study of ores from Eva bauxite deposit, which is little known in Russia, and continues researching this topic, which was initiated by E. L. Shkolnik.Важная роль биогенного фактора в осадочном рудогенезе сейчас, по истечении более чем столетнего периода после публикаций работ В. И. Вернадского и Я. В. Самойлова, стала для всех неоспоримым фактом. Дискуссии, в основном, разворачиваются относительно того, насколько созидательной была деятельность организмов при формировании конкретных полезных ископаемых. В 2004 г. вышла в свет коллективная монография российских геологов “Биоморфные структуры бокситов”. В ней, на примере десятков месторождений огромного стратиграфического диапазона от позднего протерозоя до четвертичного периода и широкого географического распространения (Африка, Евразия, Австралия, Америка), было показано активное участие в бокситообразовании различных микробных сообществ. Выполненное электронно-микроскопическое изучение руд малоизвестного в России бокситового месторождения Ева продолжает исследования по данной тематике, инициатором которых был Э. Л. Школьник

Microbiota of Bauxites in the Eva Deposit (Guinea-Bissau)

Abstract: Now more than one century after the publication of works of V.I. Vernadsky and Ya.V. Samoilov, important role of the biogenic factor in the sedimentary ore genesis has become an undeniable fact for all geologists. Discussions at present are concerned mainly with creative nature of the activity of organisms in the formation of specified mineral resources. In the collective monograph of Russian geologists “Biomorphic Structures of Bauxites” published in 2004, based on studying several tens of deposits with a vast age (Late Proterozoic to Quaternary) range and geographic setting (Africa, Eurasia, Australia, and America), active participation of different microbial communities in the bauxite formation was demonstrated. Accomplishment of SEM studies of ores from the Eva bauxite deposit (Guinea-Bissau), an object little known in Russia, continues research works in this field initiated by E.L. Shkol’nik. © 2019, Pleiades Publishing, Inc