Abstract
Three groups of diamond crystals that differ in morphology, photoluminescence, infrared absorption, and thermal history were discovered in the Lomonosov deposit. The first group crystals are mostly octahedrons with minor signs of dissolution and a large share of nitrogen in the form of B defects. The crystals of the second type are strongly resorbed dodecahedroids with a small share of B defects. The third group consists of crystals with low-temperature С defects; they are cuboids that are often without traces of resorption, and tetrahexahedroids. These patterns indicate the polygenicity of the diamond in the Lomonosov deposit.
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Funding
This work was conducted within State contract no. 2013/188 dated April 10, 2013, and was supported by the Russian Science Foundation, grant no. 19-17-00131.
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Translated by L. Mukhortova
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Kriulina, G.Y., Vasiliev, E.A. & Garanin, V.K. Structural and Mineralogical Features of Diamonds from the Lomonosov Deposit (Arkhangelsk Province): New Data and Interpretation. Dokl. Earth Sc. 486, 627–629 (2019). https://doi.org/10.1134/S1028334X19060291
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DOI: https://doi.org/10.1134/S1028334X19060291