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A disc with fivefold symmetry; the proposed fundamental seed structure for the formation of chrysotile asbestos fibres, polygonal serpentine fibres and polyhedral lizardite spheres

G. Cressey, B. A. Cressey, F. J. Wicks and K. Yada
A disc with fivefold symmetry; the proposed fundamental seed structure for the formation of chrysotile asbestos fibres, polygonal serpentine fibres and polyhedral lizardite spheres
Mineralogical Magazine (February 2010) 74 (1): 29-37

Abstract

A chrysotile disc is proposed as the fundamental seed structure for the formation of chrysotile asbestos fibres, polygonal serpentine fibres and polyhedral lizardite spheres. The curvature, fivefold symmetry and hydrogen-bonding alignment of the layers in the seed disc control the formation of the 15 or 30 sectors in polygonal serpentine and the orientations of the planar arrays of 15 or 30 radial crystals in polyhedral serpentine. A polygonized disc precursor to polygonal fibre formation has been observed at an arrested stage of growth in a synthesis experiment.


ISSN: 0026-461X
EISSN: 1471-8022
Coden: MNLMBB
Serial Title: Mineralogical Magazine
Serial Volume: 74
Serial Issue: 1
Title: A disc with fivefold symmetry; the proposed fundamental seed structure for the formation of chrysotile asbestos fibres, polygonal serpentine fibres and polyhedral lizardite spheres
Affiliation: Natural History Museum, Department of Mineralogy, London, United Kingdom
Pages: 29-37
Published: 201002
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 23
Accession Number: 2010-050889
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N50°00'00" - N50°49'60", W06°30'00" - W04°15'00"
Secondary Affiliation: University of Southampton, GBR, United KingdomRoyal Ontario Museum, CAN, CanadaTechnical Center Tokyo, JPN, Japan
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201028
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