Nature of diversity of diamonds in kimberlites

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The one-way evolution of inclusions in diamonds and its ultra-long duration (more than 2.8 Ga) provide evidence that the crystallization of diamonds took place from the fractionated peridotitic layer in the global magmatic ocean. Diamonds were formed as a result of accumulation of carbon in residual kimberlitic melts. The increment of SiO2 concentration in the melts caused increase in its viscosity, decrease of diffusion velocity and degree of carbon oversaturation. These resulted that the layered diamond crystallization mode was changed by the radial one, diamond octahedrons transformed into rhombic dodecahedrons and cubes, varied sculptures were created on diamond crystals faces.

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作者简介

Vladimir Shkodzinskiy

Diamond and Precious Metal Geology Institute of Siberian Branch Russian Academy of Sciences

编辑信件的主要联系方式.
Email: shkodzinskiy@diamond.ysn.ru
ORCID iD: 0000-0001-7749-1264
SPIN 代码: 7797-7586

doctor of geology, research worker

俄罗斯联邦, 677000, Yakutsk, Lenin st. 39

Viktor Beskrovanov

North-Eastern Federal University named after M.K. Ammosov

Email: vv.beskrovanov@s-vfu.ru

doctor of geology, professor

俄罗斯联邦, Yakutsk, Kulakovskogo st., 48

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