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- Title
Crystal-forming functions of glide planes in the structural organization of a number of (Pb, Bi)-containing sulfides.
- Authors
Borisov, S.; Magarill, S.; Pervukhina, N.
- Abstract
The reasons for the preference of glide planes in natural crystals are considered by studying the results of an X-ray crystallography analysis of the minerals salzburgite, eldragonite, izoklakeite, and vikingite. The glide planes organize the combination of right- of atomic fragments, which appear during crystallization, and contribute to a uniform distribution of atoms in complex compositions and a more dense and symmetrical packing. The fact that the structures have cation and anion sublattices with similar dimensions and orientations creates a situation similar to that of beats in oscillatory systems and, hence, modulates the intensity of X-ray reflections. The progressively increasing number of structures where individual atomic positions are occupied by two or more types of atoms suggests a stable geometry of the corresponding atomic sublattices with respect to compositional variations. Analysis of these 'skeletal' sublattices is a key to understanding the solid-phase transformations, contact interactions, and dynamic processes in mineral associations.
- Subjects
SULFIDE crystals; GLIDE (Crystallography); CRYSTAL structure; X-ray crystallography; CRYSTAL lattices
- Publication
Journal of Structural Chemistry, 2016, Vol 57, Issue 2, p399
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1134/S0022476616020220