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Edge dislocations in fibrous grunerite

Published online by Cambridge University Press:  05 July 2018

E. J. W. Whittaker ,
B. A. Cressey  and
J. L. Hutchison
E. J. W. Whittaker
Affiliation:
Department of Geology and Mineralogy, University of Oxford, Oxford, OX1 3PR
B. A. Cressey
Affiliation:
Department of Geology and Mineralogy, University of Oxford, Oxford, OX1 3PR
J. L. Hutchison
Affiliation:
Department of Metallurgy and Science of Materials, University of Oxford, OX1 3PH
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Abstract

Sections perpendicular to [001] of ion-thinned specimens of fibrous grunerite (amosite) have been examined by high-resolution transmission electron microscopy. In this orientation, two kinds of dislocation have been observed with about equal frequency. One lies on [001] and has a Burgers vector a. The other is on [001] and has a Burgers vector ½a+½b Interpretation of features associated with these dislocations has been assisted by the use of two-dimensional models of I-beam cross-sections which can be interlocked to simulate the possible modes of stacking.

Type
Research Article
Information
Mineralogical Magazine , Volume 44 , Issue 335 , September 1981 , pp. 287 - 291
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1981

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