Инд. авторы:	Zhimulev E.I, Chepurov A.I., Sinyakova E.F., Sonin V.M., Chepurov A.A., Pokhilenko N.P.
Заглавие:	Diamond crystallization in the Fe-Co-S-C and Fe-Ni-S-C systems and the role of sulfide-metal melts in the genesis of diamond
Библ. ссылка:	Zhimulev E.I, Chepurov A.I., Sinyakova E.F., Sonin V.M., Chepurov A.A., Pokhilenko N.P. Diamond crystallization in the Fe-Co-S-C and Fe-Ni-S-C systems and the role of sulfide-metal melts in the genesis of diamond // Geochemistry International. - 2012. - Vol.50. - Iss. 3. - P.205-216. - ISSN 0016-7029. - EISSN 1531-8397.
Внешние системы:	DOI: 10.1134/S0016702912030111; SCOPUS: 2-s2.0-84857875303;
Реферат:	eng: Diamond crystals 0.1-0.8 carats were synthesized in experiments conducted in a BARS split-sphere multianvil high-pressure apparatus in the systems Fe-Co-S-C and Fe-Ni-S-C at a pressure of 5.5 GPa and temperature of 1300°C. The microtextures of the samples and the phases accompanying diamond (carbides, graphite, monoslufide solid solution, pentlandite, and taenite) are examined in much detail, the properties of metal-sulfide-carbon alloys are discussed, and issues related to the genesis of sulfide inclusions in diamonds and graphite crystallization in the diamond stability field are considered. The experiments demonstrate that diamonds can be synthesized and grow in pre-eutectic metal-sulfide melts with up to 14 wt % sulfur at relatively low P-T parameters, which correspond to the probable temperatures and pressures of natural diamond-forming processes at depths of approximately 150 km in the Earth's upper mantle. © 2012 Pleiades Publishing, Ltd.
Ключевые слова:	natural diamond; sulfides; synthetic diagram; Diamond crystals; Diamond stability; High-pressure and temperatures; Micro texture; Multi-anvil high-pressure apparatus; Natural diamonds; Sulfide inclusion; sulfides; synthetic diagram; Taenite; Upper mantle; Carbides; Cobalt; Crystal growth; Experiments; Graphite; High pressure engineering; Iron alloys; Spheres; Sulfur; Sulfur compounds; Synthetic diamonds; crystal property; crystallization; diamond; graphite; high pressure; high temperature; P-T conditions; sulfide; high pressure and temperature (HPHT); crystal growth;
Издано:	2012
Физ. характеристика:	с.205-216