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Open AccessArticle

Mixed-Habit Type Ib-IaA Diamond from An Udachnaya Eclogite

1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Science, 630090 Novosibirsk, Russia
2
Geology and Geophysics Department, Novosibirsk State University, 630090 Novosibirsk, Russia
3
NIGP (Geo-Scientific research Enterprise) ALROSA Co., Chernyshevskoe rd. 7, 678170 Mirny, Sakha Republic, Russia
*
Author to whom correspondence should be addressed.
Minerals 2019, 9(12), 741; https://doi.org/10.3390/min9120741
Received: 13 October 2019 / Revised: 25 November 2019 / Accepted: 27 November 2019 / Published: 29 November 2019
The variety of morphology and properties of natural diamonds reflects variations in the conditions of their formation in different mantle environments. This study presents new data on the distribution of impurity centers in diamond type Ib-IaA from xenolith of bimineral eclogite from the Udachnaya kimberlite pipe. The high content of non-aggregated nitrogen C defects in the studied diamonds indicates their formation shortly before the stage of transportation to the surface by the kimberlite melt. The observed sectorial heterogeneity of the distribution of C- and A-defects indicates that aggregation of nitrogen in the octahedral sectors occurs faster than in the cuboid sectors.
Keywords: diamond; eclogite; nitrogen; mantle diamond; eclogite; nitrogen; mantle
MDPI and ACS Style

Zedgenizov, D.; Bogush, I.; Shatsky, V.; Kovalchuk, O.; Ragozin, A.; Kalinina, V. Mixed-Habit Type Ib-IaA Diamond from An Udachnaya Eclogite. Minerals 2019, 9, 741.

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