Инд. авторы:	Shatsky V., Zedgenizov D., Ragozin A., Kalinina V.
Заглавие:	Silicate Melt Inclusions in Diamonds of Eclogite Paragenesis from Placers on the Northeastern Siberian Craton
Библ. ссылка:	Shatsky V., Zedgenizov D., Ragozin A., Kalinina V. Silicate Melt Inclusions in Diamonds of Eclogite Paragenesis from Placers on the Northeastern Siberian Craton // MINERALS. - 2019. - Vol.9. - Iss. 7. - Art.412. - ISSN 2075-163X.
Внешние системы:	DOI: 10.3390/min9070412; РИНЦ: 41628066; SCOPUS: 2-s2.0-85070677043; WoS: 000478593300042;
Реферат:	eng: New findings of silicate-melt inclusions in two alluvial diamonds (from the Kholomolokh placer, northeastern Siberian Platform) are reported. Both diamonds exhibit a high degree of N aggregation state (60-70% B) suggesting their long residence in the mantle. Raman spectral analysis revealed that the composite inclusions consist of clinopyroxene and silicate glass. Hopper crystals of clinopyroxene were observed using scanning electron microscopy and energy-dispersive spectroscopic analyses; these are different in composition from the omphacite inclusions that co-exist in the same diamonds. The glasses in these inclusions contain relatively high SiO2, Al2O3, Na2O and, K2O. These composite inclusions are primary melt that partially crystallised at the cooling stage. Hopper crystals of clinopyroxene imply rapid cooling rates, likely related to the uplift of crystals in the kimberlite melt. The reconstructed composition of such primary melts suggests that they were formed as the product of metasomatised mantle. One of the most likely source of melts/fluids metasomatising the mantle could be a subducted slab.
Ключевые слова:	EVOLUTION; PIPE; GROWTH; MANTLE; FLUID INCLUSIONS; BEARING ECLOGITE; FIBROUS DIAMONDS; UDACHNAYA KIMBERLITE; MINERAL INCLUSIONS; melts; diamond-forming fluids; melt inclusions; mineral inclusions; mantle; diamond; YAKUTIA;
Издано:	2019
Физ. характеристика:	412