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Title: Enantiomorphism of kaolinite: Manifestation at the levels of elementary layer and microcrystals

Abstract

The right and left forms of the argillaceous mineral kaolinite (Al{sub 2} Si{sub 2}O{sub 5}(OH){sub 4}), which is wide-spread in nature, have been revealed for the first time by transmission electron microscopy and gold decoration in vacuum. The enantiomorphic forms of this mineral are established at the level of the elementary 7 Angstrom-Sign layer, which determines the kaolinite structure, and at the level of nano- and microcrystals typical of this mineral. Both kaolinite forms are widespread in ancient and young weathering crusts. Enantiomorphic kaolinite microcrystals are formed in two ways: through the periodic formation of 2D nuclei and via helical growth, which is dominant for both kaolinite forms. The right- and left-handed kaolinite forms are observed in the samples under study with equal probability.

Authors:
 [1]
  1. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Institution of the Russian Academy of Sciences (Russian Federation)
Publication Date:
OSTI Identifier:
22054298
Resource Type:
Journal Article
Journal Name:
Crystallography Reports
Additional Journal Information:
Journal Volume: 56; Journal Issue: 2; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7745
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL GROWTH; CRYSTALS; GOLD; KAOLINITE; LAYERS; PROBABILITY; TRANSMISSION ELECTRON MICROSCOPY; WEATHERING

Citation Formats

Samotoin, N. D., E-mail: samnik@igem.ru. Enantiomorphism of kaolinite: Manifestation at the levels of elementary layer and microcrystals. United States: N. p., 2011. Web. doi:10.1134/S1063774511010202.
Samotoin, N. D., E-mail: samnik@igem.ru. Enantiomorphism of kaolinite: Manifestation at the levels of elementary layer and microcrystals. United States. https://doi.org/10.1134/S1063774511010202
Samotoin, N. D., E-mail: samnik@igem.ru. 2011. "Enantiomorphism of kaolinite: Manifestation at the levels of elementary layer and microcrystals". United States. https://doi.org/10.1134/S1063774511010202.
@article{osti_22054298,
title = {Enantiomorphism of kaolinite: Manifestation at the levels of elementary layer and microcrystals},
author = {Samotoin, N. D., E-mail: samnik@igem.ru},
abstractNote = {The right and left forms of the argillaceous mineral kaolinite (Al{sub 2} Si{sub 2}O{sub 5}(OH){sub 4}), which is wide-spread in nature, have been revealed for the first time by transmission electron microscopy and gold decoration in vacuum. The enantiomorphic forms of this mineral are established at the level of the elementary 7 Angstrom-Sign layer, which determines the kaolinite structure, and at the level of nano- and microcrystals typical of this mineral. Both kaolinite forms are widespread in ancient and young weathering crusts. Enantiomorphic kaolinite microcrystals are formed in two ways: through the periodic formation of 2D nuclei and via helical growth, which is dominant for both kaolinite forms. The right- and left-handed kaolinite forms are observed in the samples under study with equal probability.},
doi = {10.1134/S1063774511010202},
url = {https://www.osti.gov/biblio/22054298}, journal = {Crystallography Reports},
issn = {1063-7745},
number = 2,
volume = 56,
place = {United States},
year = {Tue Mar 15 00:00:00 EDT 2011},
month = {Tue Mar 15 00:00:00 EDT 2011}
}