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Structural characteristics of a new cation-deficient representative of the labuntsovite group

Structural characteristics of a new cation-deficient representative of the labuntsovite group Abstract The crystal structure of a new representative of the labuntsovite group from the Khibiny massif (the Kola Peninsula) has been refined. The unit-cell parameters are a = 14.298(7) Å, b = 13.816(7) Å, c = 7.792(3) Å, β = 116.85(5)°, V = 1373.3 Å3, sp. gr. C2/m, R aniso = 0.047, 1084 reflections with F > 4σ (F). The mineral differs from lemmleinite-Ba and other members of the group by the predominance of the vacancies in two key cationic positions—C position is occupied by Ba cations (37%) and D position is occupied mainly by Mn cations (47%). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crystallography Reports Springer Journals

Structural characteristics of a new cation-deficient representative of the labuntsovite group

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References (1)

Publisher
Springer Journals
Copyright
2002 MAIK "Nauka/Interperiodica"
ISSN
1063-7745
eISSN
1562-689X
DOI
10.1134/1.1466497
Publisher site
See Article on Publisher Site

Abstract

Abstract The crystal structure of a new representative of the labuntsovite group from the Khibiny massif (the Kola Peninsula) has been refined. The unit-cell parameters are a = 14.298(7) Å, b = 13.816(7) Å, c = 7.792(3) Å, β = 116.85(5)°, V = 1373.3 Å3, sp. gr. C2/m, R aniso = 0.047, 1084 reflections with F > 4σ (F). The mineral differs from lemmleinite-Ba and other members of the group by the predominance of the vacancies in two key cationic positions—C position is occupied by Ba cations (37%) and D position is occupied mainly by Mn cations (47%).

Journal

Crystallography Reports – Springer Journals

Published: Mar 1, 2002

Keywords: Crystallography and Scattering Methods

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