Edge Dislocations in Fibrous Grunerite

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

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 ½ab 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.

Mineralogical Magazine; September 1981 v. 44; no. 335; p. 287-291; DOI: 10.1180/minmag.1981.044.335.08
© 1981, The Mineralogical Society
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