Type IIa diamond formation

 
PIIS086956520003037-3-1
DOI10.31857/S086956520003037-3
Publication type Article
Status Published
Authors
Affiliation: LLC “ADAMANT”
Address: Russian Federation, Saint-Petersburg
Journal nameDoklady Akademii nauk
EditionVolume 482 Issue 5
Pages583-586
Abstract

The petrological model of type IIa diamond formation is proposed. By the model these diamonds were formed from fluids on the last stages of kimberlite magma formation at 600-700 C and 20-30 kbar. The model explains the main specific of the type IIa diamonds. They are the enrichment of light carbon, low nitrogen content, the absence of silicate inclusions, the large size and cleanliness, a high degree of desorption, association with the products of late crystallization of kimberlite magmas.

Keywords
Received12.11.2018
Publication date12.11.2018
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