COMPOSITIONAL FEATURES AND GENESIS OF STEENSTRUPINE FROM IGNEOUS ROCKS OF THE LOVOZERO ALKALINE MASSIFS, KOLA PENINSULA

dc.contributor.author	Chukanova V.N.
dc.contributor.author	Kogarko L.N.
dc.contributor.author	Williams C.T.
dc.contributor.author	Pekov I.V.
dc.contributor.author	Chukanov N.V.
dc.date.accessioned	2022-07-25T04:36:21Z
dc.date.available	2022-07-25T04:36:21Z
dc.date.issued	2004
dc.identifier	https://www.elibrary.ru/item.asp?id=13460315
dc.identifier.citation	Geochemistry International, 2004, 42, 4, 295-308
dc.identifier.issn	0016-7029
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/38366
dc.description.abstract	Steenstrupine from igneous rocks (foyaites and lujaurites) of the Lovozero alkaline massif was studied for the first time. Unlike the early magmatic steenstrupine of the Ilimaussaq massif, the Lovozero steenstrupine is a late mineral, which crystallizes in the interstices of rock-forming mineral grains. Compared to steenstrupine from pegmatites, the Lovozero magmatic steenstrupine has an elevated Ti content and variable Na content and Fe/Mn and Si/P ratios. The distinct correlation between Th and P indicates isomorphic substitution Si 4+ + Th4+ = P5+ + REE 3+. Thorosteenstrupine was found in eudialyte lujaurite. The minerals of the steenstrupine-(Ce)-thorosteenstrupine series from the Lovozero, Khibina, and Ilimaussaq ultra-alkaline pegmatites were studied for comparison.
dc.title	COMPOSITIONAL FEATURES AND GENESIS OF STEENSTRUPINE FROM IGNEOUS ROCKS OF THE LOVOZERO ALKALINE MASSIFS, KOLA PENINSULA
dc.type	Статья

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