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Diamond formation in carbonate-silicate-sulfide-carbon melts; Raman- and IR-microspectroscopy

Anna V. Spivak, Yuriy A. Litvin, Anastasia V. Shushkanova, Vladimir Yu. Litvin and Andrey A. Shiryaev
Diamond formation in carbonate-silicate-sulfide-carbon melts; Raman- and IR-microspectroscopy (in Diamonds, Makoto Arima (editor), Ben Harte (editor) and Nikolay V. Sobolev (editor))
European Journal of Mineralogy (June 2008) 20 (3): 341-347


An experimental study on diamond nucleation and growth in a carbon solution in multicomponent carbonate, carbonate-silicate, silicate and sulfide melts was performed using a high-pressure toroidal anvil-with-hole cell with graphite resistive furnace. The boundary conditions of diamond spontaneous crystallization and seeded growth are determined for all the diamond growth media with the use of the PT diagram of diamond crystal growth. A density of diamond nucleation in the studied carbonate, carbonate-silicate, silicate, and sulfide melts with dissolved carbon exceeds (3.0-5.0)X10 (super 2) nuclei/mm (super 3) with a maximum around 1.0X10 (super 5) nuclei/mm (super 3) at formation of polycrystalline "diamondite". Raman spectra of quenched carbonate-carbon, carbonate-silicate-carbon, silicate-carbon and sulfide-carbon melts contain bands relating to the region of C-C stretching modes in diamond and graphite microphases. FTIR spectra show that nitrogen defects in the carbonate-synthetic diamond are characterized with the mixed Ib-IaA type and reveal a high nitrogen concentration (up to 850 ppm).

ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 20
Serial Issue: 3
Title: Diamond formation in carbonate-silicate-sulfide-carbon melts; Raman- and IR-microspectroscopy
Title: Diamonds
Author(s): Spivak, Anna V.Litvin, Yuriy A.Shushkanova, Anastasia V.Litvin, Vladimir Yu.Shiryaev, Andrey A.
Author(s): Arima, Makotoeditor
Author(s): Harte, Beneditor
Author(s): Sobolev, Nikolay V.editor
Affiliation: Russian Academy of Sciences, Institute of Experimental Mineralogy, Chernogolovka, Russian Federation
Pages: 341-347
Published: 200806
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 35
Accession Number: 2008-111808
Categories: Geophysics of minerals and rocksMineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200841
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