Russian with English abstract [(New data on the crystal chemistry of manganese oxides.)]

Electron microdiffraction and energy-dispersive analytical techniques have been used to identify various types of asbolan minerals. In ores of the Liipovskoe and Tyulenova deposits, USSR, Co-Ni asbolan occurs as lamellar aggregates, with ordered Mn4+ and Co-Ni octahedral layers forming two sublattices; molecular H2O occurs between the Co-Ni layers. In Ni asbolan from the central Urals, octahedral Mn4+ and insular Ni layers are aligned along the c axis, the ordered distribution of Ni resulting in the a parameter (5.21 A) of the hexagonal Ni-sublattice being sq root 3 X that (2.83 A) of the Mn4+-sublattice. In Co asbolan from Zaalveld, Thuringia, Co3+ cations occur in tetrahedral coordination with ordered interlayering of Mn4+ octahedral and Co3+ tetrahedral layers. Crystal-chemical data on birnessite, buserite, akhtenskite and vernadite are presented. -R.A.H.

Авторы
Редакторы
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Издательство
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Номер выпуска
2
Язык
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Страницы
210-221
Статус
Опубликовано
Подразделение
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DOI
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Номер
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Том
116
Год
1987
Организации
  • 1 Inst. Geol. Rudn. Mestorozhd., Petrogr., Mineral., Geokhim., Moscow, USSR.
Ключевые слова
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Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/1313/