
Please use this identifier to cite or link to this item:
http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17014
Title: | Dislocations in Orthorhombic Minerals: Part 1.—Naturally-occurring Barytes |
Authors: | Williams, J. O. Tennakoon, D. T. B. Thomas, J. M. |
Keywords: | Chemistry Orthorhombic Minerals Barytes Crystals Journal of the Chemical Society : Faraday Transaction - I |
Issue Date: | 1972 |
Publisher: | Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (10) |
Abstract: | The emergence points of dislocations at cleavage faces of natural barytes crystals have been identified using the etchpit technique. The alignments of these etchpits and the observation of slip traces both in as-grown and deliberately deformed crystals yield the active slip planes in this material. The results compare favourably with a recent independent study of natural barytes crystals employing the X-ray topographical technique. Comparisons are made between barytes and the isomorphous ammonium perchlorate. It is found that, with one notable exception, the dislocation structures of these two materials are identical and probably characteristic of the space group, Pmna. The slip systems are {201}[101]; {401}[010]; {110}<T10>; {001}[010J; {010} [001]; {101}<T01> or {101} [010], {110} [001] and {201} [001], the last-named being active in barytes only. The important criterion when considering the y-irradiation behaviour of these two materials is the thermal stability of the respective lattices. |
URI: | http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17014 |
Appears in Collections: | Journal Articles (before-1995) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1987-1991.pdf Restricted Access | 1.86 MB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.