REE Minerals in the Rocks of the Katugin Rare Metal Deposit, East Transbaikalia: Behavior of Lanthanides and Y during Crystallization of an F-Saturated Agpaitic Melt

The chemical composition and origin of major REE minerals of aegirine, aegirine–arfvedsonite, arfvedsonite, and annite–riebeckite–arfvedsonite granites are studied for the Katugin Ta–Nb–Zr–Y deposit with cryolite in the southwestern part of the Aldan Shield. The REE mineralization of granites includ...

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Bibliographic Details
Published in:Geology of ore deposits 2018-12, Vol.60 (8), p.643-657
Main Authors: Savelyeva, V. B., Bazarova, E. P., Khromova, E. A., Kanakin, S. V.
Format: Article
Language:English
Subjects:
Carbonates
Chemical composition
Cryolite
Crystallization
Earth and Environmental Science
Earth Sciences
Fluorides
Granite
Ilmenite
Lanthanides
Metals
Mineral Resources
Mineralization
Minerals
Niobium
Organic chemistry
Oxides
Phosphates
Sphalerite
Tantalum
Yttrium
Zincblende
Zircon
Zirconium
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Summary:The chemical composition and origin of major REE minerals of aegirine, aegirine–arfvedsonite, arfvedsonite, and annite–riebeckite–arfvedsonite granites are studied for the Katugin Ta–Nb–Zr–Y deposit with cryolite in the southwestern part of the Aldan Shield. The REE mineralization of granites includes two types: (i) disseminated grains of pyrochlore and, to a lesser extent, other Nb– Ln oxides, Ln phosphates, and Ln –F carbonates in association with zircon, ilmenite, sphalerite, and other minerals and (ii) interstitial intergrowths of Ln fluorides.
ISSN:1075-7015
1555-6476
DOI:10.1134/S1075701518080093