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Regularities and specific features of the iron ore horizon, along with typomorphic features of ore-bearing and ore-barren units, of the Kerch Peninsula make it possible to distinguish six lithogenetic facies that are characterized by typical sedimentation environments and geochemical specializations. A principle sedimentation model is proposed for iron ore deposits of the Kerch Peninsula. 相似文献
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Economic significance of the sedimentary iron ore deposits is shown. The most important types of these deposits are characterized and their genesis is considered. Special attention is given to the formation of goethite-chlorite-siderite ooliths, which represent the main component of marine iron ore deposits. Geochemical and mineralogical features of different types of iron ores are examined. 相似文献
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The article is dedicated to the geological structure and spatial position of the Cimmerian Kerch-Taman iron ore basin. Based on paleogeographic and recent geochemical data, it is shown that iron accumulated in the Cimmerian brackish lake originated mostly from weathered old rocks of the Ukrainian shield. The metal in question was delivered to the basin by its multistage migration and concentration owing to processes, which involved the eluvial zone of weathering crusts, krasnozem soils, rivers, bogs, and limans surrounding the lake. The formation mechanism of iron ore deposits is considered with the assessment of prospects for the discovery of new Cimmerian deposits in the spacious West Kuban depression and Crimea region and offshore areas of the Azov and Black seas. 相似文献
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E. V. Golubovskaya 《Lithology and Mineral Resources》2005,40(2):187-190
The REE distribution in alluvial, deltaic, liman, and lacustrine oolitic iron ores in the northern Aral region is analyzed. In general, the iron ores are relatively enriched in LREE. The REE distribution patterns are sufficiently similar in different facies, although the contents may slightly vary owing to specific features of the mineral and chemical compositions.Translated from Litologiya i Poleznye Iskopaemye, No. 2, 2005, pp. 215–219.Original Russian Text Copyright © 2005 by Golubovskaya. 相似文献
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E. V. Golubovskaya 《Lithology and Mineral Resources》2007,42(3):281-288
The major and trace element distribution was studied in the Eocene-Miocene stratotype section of the northern Aral region, northern coast of the Perovskii Gulf. The geochemical specific of ore-bearing rocks is shown. Qualitative trends in the distribution of element in genetically diverse rocks are established. 相似文献
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The mineral composition and geochemistry of poppy-shaped ores, which represented river-bed alluvium and interore clay sediments formed in oxbow zones of the Lisakov deposit (northern Kazakhstan), are examined. Specific features of trace element distribution in oolitic ores, magnetic concentrate of oolites, interore clays, and fine clay fraction are analyzed. 相似文献
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Mineralogical-geochemical features of different facies types of sedimentary iron ore deposits are described. Particular attention is paid to deposits associated with the weathering crusts of ultramafic igneous rocks and to marine oolitic iron ores. The multistage formation of their geochemical properties is proved available geochemical models are considered. 相似文献
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