Fedorite from murun alkaline complex (Russia): Spectroscopy and crystal chemical featuresстатья
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Дата последнего поиска статьи во внешних источниках: 1 сентября 2021 г.
Авторы:
Kaneva E.V. ,
Shendrik R.Y. ,
Radomskaya T.A. ,
Suvorova L.F.
Журнал:
Minerals
Том:
10
Номер:
8
Год издания:
2020
Первая страница:
1
Последняя страница:
23
DOI:
10.3390/min10080702
Аннотация:
Fedorite is a rare phyllosilicate, having a crystal structure characterized by SiO4tetrahedral double layers located between continuous layers formed by edge-sharing (Ca,Na)octahedra, and containing interlayer K, Na atoms and H2O molecules. A mineralogical-petrographic and detailed crystal-chemical study of fedorite specimens from three districts of the Murun alkaline complex was performed. The sequence of the crystallization of minerals in association with fedorite was established. The studied fedorite samples differ in the content of interlayer potassium and water molecules. A comparative analysis based on polyhedral characteristics and deformation parameters was carried out. For the first time, EPR, optical absorption and emission spectra were obtained for fedorite. The raspberry-red coloration of the mineral specimens could be attributed to the presence of Mn4+ ions. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Добавил в систему:
Шендрик Роман Юрьевич