Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-14T05:40:32.177Z Has data issue: false hasContentIssue false
  • English
  • Français

The orientation of Widmanstetter figures in a random section

Published online by Cambridge University Press:  14 March 2018

Sidney Melmore
Sidney Melmore*
Affiliation:
The Yorkshire Museum, York
Get access Rights & Permissions [Opens in a new window]

Extract

The problem of determining the orientation of Widmanstetter figures has recently arisen in a paper by Dr. L. J. Spencer on the Gibeon shower of meteoritic irons in South-West Africa: the method of attacking it to be described here will be applied to the crystals illustrated in plate II of his paper.

By producing the faces of a regular octahedron in all possible directions a set of six congruent prisms is formed, as shown in fig. 1. The Widmanstetter figures are the traces of these prisms in a plane of section. The section across any one of the prisms by a plane normal to its axis is a rhomb whose angles are those of a face of the rhombic-dodecahedron, that is to say, 70° 31′ and 109° 28′.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 26 , Issue 176 , March 1942 , pp. 167 - 171
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1942

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Note

page 167 note 1 Spencer, L. J., Min. Mag., 1941, vol. 26, p. 19, pls. I, II.CrossRefGoogle Scholar