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A crystal-chemical classification of borate structures with emphasis on hydrated borates

Physics and Chemistry of Minerals

By:
,
DOI: 10.1007/BF00307525

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Abstract

The rules governing formation of hydrated borate polyanions that were proposed by C.L. Christ in 1960 are critically reviewed and new rules added on the basis of recent crystal structure determinations. Principles and classifications previously published by others are also critically reviewed briefly. The fundamental building blocks from which borate polyanions can be constructed are defined on the basis of the number n of boron atoms, and the fully hydrated polyanions are illustrated. Known structures are grouped accordingly, and a shorthand notation using n and symbols ?? = triangle, T = tetrahedron is introduced so that the polyanions can be easily characterized. For example, 3:??+2T describes [B3O3(OH)5]2-. Correct structural formulas are assigned borates with known structures whereas borates of unknown structure are grouped separately. ?? 1977 Springer-Verlag.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A crystal-chemical classification of borate structures with emphasis on hydrated borates
Series title:
Physics and Chemistry of Minerals
DOI:
10.1007/BF00307525
Volume
2
Issue:
1-2
Year Published:
1977
Language:
English
Publisher:
Springer-Verlag
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
59
Last page:
87