Инд. авторы:	Zedgenizov D.A., Ragozin A.L., Shatsky V.S., Araujo D., Griffin W.L.
Заглавие:	Fibrous diamonds from the placers of the northeastern Siberian Platform: Carbonate and silicate crystallization media
Библ. ссылка:	Zedgenizov D.A., Ragozin A.L., Shatsky V.S., Araujo D., Griffin W.L. Fibrous diamonds from the placers of the northeastern Siberian Platform: Carbonate and silicate crystallization media // Russian Geology and Geophysics. - 2011. - Vol.52. - Iss. 11. - P.1298-1309. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2011.10.003; SCOPUS: 2-s2.0-80455156312;
Реферат:	eng: The first data are presented on the compositions of microinclusions in fibrous diamonds from the Ebelyakh placers, northeastern Siberian Platform. Their fluid/melt microinclusions are of silicate or carbonate compositions. In general, the trace element patterns for the microinclusions correspond to kimberlites and carbonatites. The major-element composition differs significantly; for example, the microinclusions are considerably enriched in K and Na. In two of the studied diamonds, the microinclusion compositions differ considerably in the cores and rims. In one of them, the composition of the medium changes from chloride-carbonate to predominantly carbonate (sample HI-90); in the other one, from carbonate to silicate (sample HI-98). Similar carbon isotope characteristics of diamonds with microinclusions of two contrasting media might suggest their crystallization from a mantle reservoir with the same carbon isotope characteristics. The geochemical features of the microinclusions in the placer diamonds revealed their relationship with protokimberlitic carbonate-silicate fluids. Such fluids might result from the metasomatic interaction of volatiles and/or the low-degree partial melting of peridotite and eclogite substrates. © 2011.
Ключевые слова:	Diamond; Fluid; Melt; Microinclusions; Siberian Platform; Russian Federation; trace element; silicate; peridotite; partial melting; metasomatism; melt inclusion; kimberlite; isotopic composition; geochemistry; fluid inclusion; eclogite; diamond; crystallization; chemical composition; carbonate; Carbon isotope composition; carbon isotope;
Издано:	2011
Физ. характеристика:	с.1298-1309