The First Find of Mannardite in Russia
- Авторлар: Reznitsky L.1, Sklyarov E.1, Ushchapovskaya Z.1, Barash I.1
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Мекемелер:
- Institute of the Earth’s Crust, Siberian Branch
- Шығарылым: Том 479, № 1 (2018)
- Беттер: 397-400
- Бөлім: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/192590
- DOI: https://doi.org/10.1134/S1028334X18030285
- ID: 192590
Дәйексөз келтіру
Аннотация
Mannardite was found in a type of Cr–V–bearing metamorphic rock of the Slyudyanka complex (South Baikal region). The X-ray data of the mineral are recalculated for three scenarios taking into account possible variations of the mannardite structure. The mean chemical composition is as follows (14 analyses, wt %): 0.11 SiO2, 52.08 TiO2, 6.19 VO2, 13.51 V2O3, 5.50 Cr2O3, 0.24 Al2O3, 0.16 Fe2O3, 0.05 MgO, 20.09 BaO, 2.09 H2O (the H2O, VO2, and V2O3 contents are recalculated). The formula of the mean composition is (Ba1.06H2O0.94)(Ti5.27Si0.21V0.614+V1.453+Cr0.59Fe0.02Mg0.01)O16. Mannardite is characterized by the presence of different valent V. The mineral can be hydrous with molecular H2O or hydroxylion in tunnels or anhydrous. Mannardite can be considered an indicator of the hydroxyl or oxygen regime of petrogenetic processes.
Авторлар туралы
L. Reznitsky
Institute of the Earth’s Crust, Siberian Branch
Хат алмасуға жауапты Автор.
Email: reznitskii@mail.ru
Ресей, Irkutsk, 664033
E. Sklyarov
Institute of the Earth’s Crust, Siberian Branch
Email: reznitskii@mail.ru
Ресей, Irkutsk, 664033
Z. Ushchapovskaya
Institute of the Earth’s Crust, Siberian Branch
Email: reznitskii@mail.ru
Ресей, Irkutsk, 664033
I. Barash
Institute of the Earth’s Crust, Siberian Branch
Email: reznitskii@mail.ru
Ресей, Irkutsk, 664033