Инд. авторы:	Kogarko L.N., Ryabchikov I.D., Kuzmin D.V.
Заглавие:	High-ba mica in olivinites of the guli massif (maimecha-kotui province, Siberia)
Библ. ссылка:	Kogarko L.N., Ryabchikov I.D., Kuzmin D.V. High-ba mica in olivinites of the guli massif (maimecha-kotui province, Siberia) // Russian Geology and Geophysics. - 2012. - Vol.53. - Iss. 11. - P.1209-1215. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2012.09.007; SCOPUS: 2-s2.0-84868294487;
Реферат:	eng: High-Ba (~. 11 wt.% BaO) phlogopite was found for the first time in olivinites of the Guli intrusion in the Maimecha-Kotui province of ultrabasic alkaline rocks and carbonatites. The high-Ba mica occurs in assemblage with a paragenesis of olivinite minerals-clinopyroxene, titanomagnetite, apatite, and ilmenite. High-Ba mica is an early phlogopite generation. Its magmatic crystallization led to a decrease in Ba content. Low-Ba mica is a late phlogopite generation. The high Ba/K ratios at the early stages of evolution of a mantle magmatic system are necessary for the formation of high-Ba minerals and point to magma formation at great depths and the contribution of mantle metasomatism to the geochemical characteristics of parental magmas. © 2012.
Ключевые слова:	alkaline rock; apatite; carbonatite; clinopyroxene; crystallization; ilmenite; magma chemistry; mantle; mantle chemistry; Siberia; titanomagnetite; phlogopite; parent material; paragenesis; olivine; mica; metasomatism; Mantle metasomatism; Guli intrusion; Olivinite; Ba-phlogopite;
Издано:	2012
Физ. характеристика:	с.1209-1215