International
Tables for
Crystallography
Volume D
Physical properties of crystals
Edited by A. Authier

International Tables for Crystallography (2006). Vol. D, ch. 1.4, p. 99

Figure 1.4.1.1 

H. Küppersa*

aInstitut für Geowissenshaften, Universität Kiel, Olshausenstrasse 40, D-24098 Kiel, Germany
Correspondence e-mail: kueppers@min.uni-kiel.de

[Figure 1.4.1.1]
Figure 1.4.1.1

Sections (ac plane) of representation surfaces for a trigonal (or tetragonal or hexagonal) crystal with [\alpha_{11} = \alpha_{22} = -1] and [\alpha_{33} = +3 \times 10^{-5}\;\hbox{K}^{-1}] (similar to calcite). (a) Quadric, (b) strain ellipsoid (greatly exaggerated), (c) polar diagram. The c axis is the axis of revolution. Sectors with negative expansions are dashed.