COMPARISON OF THE I AND IV DIAMOND TYPES (ACCORDING TO THE CLASSIFICATION OF Y.L. ORLOV) FROM THE SNAP LAKE KIMBERLITES (SLAVE CRATON, CANADA)

O. A. Ivanova; Иванова О. А.; N. P. Pokhilenko; Похиленко Н. П.; V. P. Afanasiev; Афанасьев В. П.; D. A. Zedgenizov; Зедгенизов Д. А.; E. O. Barabash; Барабаш Е. О.

doi:10.31857/S2686739723600200

COMPARISON OF THE I AND IV DIAMOND TYPES (ACCORDING TO THE CLASSIFICATION OF Y.L. ORLOV) FROM THE SNAP LAKE KIMBERLITES (SLAVE CRATON, CANADA)

Authors: Ivanova O.A.¹^,2, Pokhilenko N.P.¹^,2, Afanasiev V.P.¹, Zedgenizov D.A.³, Barabash E.O.¹
Affiliations:
1. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
2. Novosibirsk State University
3. A.N. Zavaritsky Institute of Geology and Geochemistry, Urals Branch of the Russian Academy of Sciences
Issue: Vol 511, No 1 (2023)
Pages: 31-37
Section: MINERALOGY
Submitted: 30.01.2025
Published: 01.07.2023
URL: https://edgccjournal.org/2686-7397/article/view/649867
DOI: https://doi.org/10.31857/S2686739723600200
EDN: https://elibrary.ru/RXPJNY
ID: 649867

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Abstract
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Abstract

The article is devoted to the study of diamonds of the I and IV varieties (according to the classification of Y.L. Orlov) from Snap Lake kimberlites. Based on the study of the morphology, the impurity defects of nitrogen and the internal structure of these diamonds, it was found that the uncoated crystals and the cores of coated diamonds were formed under similar conditions. It is assumed that the coats were formed on a significant part of the formed diamonds under mantle conditions, and their etching occurred at the hypogenic stage of the development of the kimberlite body.

Keywords

diamond, IR spectroscopy, Snap Lake, lithospheric mantle, coated diamonds, green color

References

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