Abstract
The study focuses on the identification and investigation of crystal-optical anisotropy phenomena observed on surfaces of a curve-faced diamond crystal found in alluvial sediments of the Lower Us’va River in Perm territory. Raman spectroscopy and atomic force microscopy show that interference of polarized light reflected from the tetrahexahedral faces of the diamond crystal is inspired by anisotropic carbonic matter, which appears as a film with graphene or nanographite structure and about 4 nm in thickness. The data allow us to suggest the formation conditions of curve-faced diamond crystals and origin of nanocrystalline carbonic matter on their faces.
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Original Russian Text © R.L. Brodskaya, E.A. Golubev, S.I. Isaenko, 2015, published in Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, 2015, No. 6, pp. 1–8.
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Brodskaya, R.L., Golubev, E.A. & Isaenko, S.I. Find of anisotropic carbonic matter on a curve-faced diamond crystal. Geol. Ore Deposits 58, 623–627 (2016). https://doi.org/10.1134/S1075701516080043
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DOI: https://doi.org/10.1134/S1075701516080043