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Diamond formation during reduction of oxide- and silicate-carbon systems at high P-T conditions

Anatoly I. Cherpurov, Igor I. Fedorov, Valery M. Sonin, Dmitry G. Bagryantsev and Nikolai Yu. Osorgin
Diamond formation during reduction of oxide- and silicate-carbon systems at high P-T conditions
European Journal of Mineralogy (April 1999) 11 (2): 355-362

Abstract

Diamonds have been synthesized in fayalite + graphite and magnetite + graphite mixtures by partial reduction of the samples with hydrogen and metallic titanium at 1300-1400 degrees C and 45-55 kbar. Hydrogen provided local reduction of the samples with separation of metallic iron, which catalysed the transformation of graphite into diamond. Iron reacted with other elements and was not found in the free state in the experimental products. These experiments can be regarded as a simplified model for the formation of some types of natural diamond during the interaction of reduced fluids with carbon-bearing mantle rocks.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 11
Serial Issue: 2
Title: Diamond formation during reduction of oxide- and silicate-carbon systems at high P-T conditions
Affiliation: Russian Academy of Sciences, Siberian Branch, Design and Technological Institute of Monocrystals, Novosibirsk, Russian Federation
Pages: 355-362
Published: 199904
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 44
Accession Number: 1999-035212
Categories: Geophysics of minerals and rocks
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199912
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