A sequence of formation of «uranpyrochlore» and fluorocalciopyrochlore in alkali pegmatites from the Vishnevye Mountains, South Urals-Reference-Cited by-同舟云学术

A sequence of formation of «uranpyrochlore» and fluorocalciopyrochlore in alkali pegmatites from the Vishnevye Mountains, South Urals

Published:2022-06 Issue: Volume: Page:15-22
ISSN:
Container-title:МИНЕРАЛОГИЯ (MINERALOGY)
language:ru
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Author:

Popova V.I.¹,Popov V.A.²,Blinov I.A.²,Kotlyarov V.A.²,Lebedeva S.M.²

Affiliation:

1. South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy Miass, Chelyabinsk region, 456317 Russia; popov@mineralogy.ru

2. South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy Miass, Chelyabinsk region, 456317 Russia

Abstract

The sequence of formation of pyrochlore crystals of various morphology and composition is considered in an aggregate with ilmenite and feldspar of nepheline-feldspar pegmatite at Mt. Dolgaya (Vish-nevye Mountains, South Urals): altered yellowish green «uranium pyrochlore» with a UO3 content of 7.62– 42.44 wt. % in different parts of the crystal, and also fuorocalciopyrochlore, fersmite, and associated minerals. The alteration of «uranpyrochlore» includes fersmitization and silicifcation in contrast to relatively late fuo-rocalciopyrochlore and fersmite. The compositions and Raman spectra of altered «uranpyrochlore» and later fuorocalciopyrochlore are given.

Publisher

South Urals Federal Research Center for Mineralogy and Geoecology of the Urals Branch of the RAS

Reference9 articles.

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