Transformation of siderite in the zone of hypergenesis
https://doi.org/10.17586/2220-8054-2022-13-5-539-545
Abstract
The structure of siderite aggregates and its weathering products from the Ruza deposit, Moscow Region, has been studied by X-ray phase analysis and electron microscopy. The initial siderite is a dense FeCO3 aggregate of micron-sized grains. The nodules are covered with an ocher weathered crust, the color intensity of which varies from light yellow to brown-black. A successive replacement of siderite by FeOOH goethite and lepidocrocite was revealed. It is accompanied by a sharp decrease in volume ( ∼ 30 %) and the formation of a microporous structure.
About the Authors
P. P. Fedorov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
I. A. Novikov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
V. V. Voronov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
L. V. Badyanova
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
S. V. Kuznetsov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
E. V. Chernova
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
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Review
For citations:
Fedorov P.P., Novikov I.A., Voronov V.V., Badyanova L.V., Kuznetsov S.V., Chernova E.V. Transformation of siderite in the zone of hypergenesis. Nanosystems: Physics, Chemistry, Mathematics. 2022;13(5):539-545. https://doi.org/10.17586/2220-8054-2022-13-5-539-545
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