Table 1.6.3.1

Glazer, A. M.; Cox, K. G.

doi:10.1107/97809553602060000633

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

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International Tables for Crystallography (2006). Vol. D. ch. 1.6, p. 154

Table 1.6.3.1

A. M. Glazer^a ^* and K. G. Cox^b ^‡

^a Department of Physics, University of Oxford, Parks Roads, Oxford OX1 3PU, England, and ^bDepartment of Earth Sciences, University of Oxford, Parks Roads, Oxford OX1 3PR, England
Correspondence e-mail: glazer@physics.ox.ac.uk

Table 1.6.3.1 | top | pdf |
Symmetry constraints on the optical indicatrix

Crystal system	Indicatrix	Orientation constraints
Cubic	Isotropic (sphere)	None
Tetragonal	Uniaxial	Circular cross section perpendicular to c
Trigonal
Hexagonal
Orthorhombic	Biaxial	All indicatrix axes aligned along a, b and c
Monoclinic	Biaxial	One indicatrix axis aligned along b (second setting)
Triclinic	Biaxial	None