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Title:
Direct observation of the transformation of ludwigite to orthopinakiolite
Authors:
Cooper, J. J.; Tilley, R. J. D.
Affiliation:
School of Materials Science, University of Bradford, Bradford BD7 1DP, West Yorkshire, England
Publication:
Journal of Solid State Chemistry, Volume 58, Issue 3, p. 375-382.
Publication Date:
07/1985
Origin:
ELSEVIER
Abstract Copyright:
(c) 1985 Elsevier Science B.V. All rights reserved.
DOI:
10.1016/0022-4596(85)90220-8
Bibliographic Code:
1985JSSCh..58..375C

Abstract

Crystals with the composition Mg1.5Mn1.5BO5 prepared at 1300°C in sealed platinum tubes were studied by high-resolution electron microscopy. The crystals were found to possess the ludwigite structure with very few inherent planar defects. After heating in the electron beam the electron diffraction patterns and electron micrographs showed that the ludwigite structure had rearranged to the orthopinakiolite structure. Two possible mechanisms for such a transformation have been described.
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