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Deformation Features of Super-Deep Diamonds Full article

Journal

Minerals
ISSN: 2075-163X

Output data

Year: 2020, Volume: 10, Number: 1, Article number : 18, Pages count : 14 DOI: 10.3390/min10010018

Tags

diamond; internal structure; electron backscatter diffraction; deformation

Authors

Ragozin Alexey ^1,2 , Zedgenizov Dmitry ^1,2 , Shatsky Vladislav ^1,2 , Kuper K.E. ³ , Kagi Hiroyuki ⁴

Affiliations

1	V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Sciences, Novosibirsk 630090, Russia
2	Department of Geology and Geophysics, Novosibirsk State University, Novosibirsk 630090, Russia
3	Budker Institute of Nuclear Physics, Siberian Branch Russian Academy of Sciences, Novosibirsk 630090, Russia
4	Geochemical Research Center, Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan

The paper presents new data on the internal structure of super-deep (sublithospheric) diamonds from Saõ-Luiz river placers (Brazil) and from alluvial placers of the northeastern Siberian platform (Yakutia). The sublithospheric origin of these diamonds is supported by the presence of mineral inclusions corresponding to associations of the transition zone and lower mantle. The features of morphology and internal structure have been studied by optical and scanning electron microscopy (SEM), cathodoluminescence topography (CL), and electron backscatter diffraction (EBSD) techniques. Diamonds typically have complicated growth histories displaying alternating episodes of growth, dissolution, and post-growth deformation and crushing processes. Most crystals have endured both plastic and brittle deformation during the growth history. Abundant deformation and resorption/growth features suggest a highly dynamic growth environment for super-deep diamonds. High temperatures expected in the transition zone and lower mantle could explain the plastic deformations of super-deep diamonds with low nitrogen content. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.

Ragozin A. , Zedgenizov D. , Shatsky V. , Kuper K.E. , Kagi H.
Deformation Features of Super-Deep Diamonds

Minerals. 2020. V.10. N1. 18 :1-14. DOI: 10.3390/min10010018 WOS Scopus РИНЦ AN OpenAlex

Full text from publisher

Submitted:	Nov 22, 2019
Accepted:	Dec 21, 2019
Published online:	Dec 24, 2019
Published print:	Jan 1, 2020

Web of science:	WOS:000522452300018
Scopus:	2-s2.0-85077317767
Elibrary:	43224546
Chemical Abstracts:	2020:1084401
OpenAlex:	W2998173758

DB	Citing
Web of science	7
Scopus	8
OpenAlex	7