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

被引：0

作者：

K. A. Rozenberg

R. K. Rastsvetaeva

I. V. Pekov

N. V. Chukanov

机构：

[1] Moscow State University,Faculty of Geology

[2] Russian Academy of Sciences,Shubnikov Institute of Crystallography

[3] Russian Academy of Sciences,Institute of Problems of Chemical Physics in Chernogolovka

来源：

Crystallography Reports | 2002年 / 47卷

关键词：

Reflection; Crystal Structure; Structural Characteristic; Kola Peninsula; Cationic Position;

D O I：

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中图分类号：

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摘要：

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, Raniso = 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%).

引用

页码：229 / 231

页数：2