Composition and texture of terrigenous-phosphate grains from the productive bed of the Unecha placer |
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| Authors: | V A Bel’tyukova L O Magazina |
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| Institution: | (1) Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, 119017 Moscow, Russia;(2) Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, 119017 Moscow, Russia |
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| Abstract: | Results of the study of the composition of rocks from the Unecha placer deposit and the morphology of phosphate segregations investigated by electron microscopy are presented. Several forms of the phosphate material occurrence, including the most abundant shells around grains of different configurations have been revealed. The studies carried out suggest a biogenic (bacterial-algal) nature of the phosphate material complicated by chemical metasomatism.Translated from Litologiya i Poleznye Iskopaemye, No. 1, 2005, pp. 97–102.Original Russian Text Copyright 2005 by Bel tyukova, Magazina. |
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