Reduction of symmetry in grandite solid solution

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Title:	Reduction of symmetry in grandite solid solution
Author:	Galí Medina, Salvador, 1949-
Other authors:	Universitat de Barcelona
Abstract:	The results of a crystal structure refinement of an anisotropic grandite garnet specimen with composition Gro36-4 And63-6 are given. The structure obtained has orthorrombic symmetry (space group Fddd) and is compared with similar results obtained by other authors. In all cases the reduction of symmetry is due to the ordering of Fe3+ and Al in octahedral sites. Non cubic structures of grandites are discussed in connection with optical, morphological an grou-th features of these minerals.
Subject(s):	-Estructura cristal·lina (Sòlids) -Layer structure (Solids)
Rights:	(c) Galí, 1984
Document type:	Article Article - Published version
Published by:	Universitat de Barcelona (UB). Institut de Cincias de la Terra Jaume Almera (ICTJA)
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