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Minerals 2018, 8(10), 458; https://doi.org/10.3390/min8100458

Compositional and Textural Variations in Hainite-(Y) and Batievaite-(Y), Two Rinkite-Group Minerals from the Sakharjok Massif, Keivy Alkaline Province, NW Russia

Geological Institute, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Str., 184209 Apatity, Russia
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Received: 10 September 2018 / Revised: 8 October 2018 / Accepted: 12 October 2018 / Published: 16 October 2018
(This article belongs to the Special Issue Arctic Mineral Resources: Science and Technology)
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Abstract

Compositional and textural variations in the rinkite group, seidozerite supergroup minerals, batievaite-(Y), hainite-(Y) and close to them titanosilicates from the Sakharjok massif were studied. Statistical analysis allowed for defining two major substitution schemes leading to batievaite-(Y) and cation-deficient titanosilicates forming: Ca2+ + Na+ + F ↔ □ + Y3+ + (OH) and Ca2+ + Na+ ↔ □ + REE3+. Batievaite-(Y) and other cation-deficient titanosilicates are the earlier minerals formed by solid state transformation of the primary full-cation phase. Hainite-(Y) is a later mineral. It forms rims around earlier titanosilicates, or, less often, separate crystals. View Full-Text
Keywords: batievaite-(Y); hainite-(Y); titanosilicate; rinkite group minerals; Kola Peninsula; Sakharjok massif; Keivy alkaline province; transformation mineral species batievaite-(Y); hainite-(Y); titanosilicate; rinkite group minerals; Kola Peninsula; Sakharjok massif; Keivy alkaline province; transformation mineral species
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Selivanova, E.A.; Lyalina, L.M.; Savchenko, Y.E. Compositional and Textural Variations in Hainite-(Y) and Batievaite-(Y), Two Rinkite-Group Minerals from the Sakharjok Massif, Keivy Alkaline Province, NW Russia. Minerals 2018, 8, 458.

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