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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_exptl_crystal.colour
Name:_exptl_crystal.colour
Alias:
_exptl_crystal_colour
Definition:
A description of the colour of the crystal.
Data items from the EXPTL_CRYSTAL_APPEARANCE category should be used in
preference to this item when possible.
Examples:| 'translucent pale green' |
| 'dark yellow' |
| 'metallic blue' |
| red |
| colourless |
| 'dichroic dark purple/pale blue' |
Type: Text
Definition method:
default_value = ""
With c as exptl_crystal_appearance {
if (not Is_missing(c.general))
default_value = c.general
if (not Is_missing(c.intensity)) {
if (len(default_value) > 0) default_value = default_value + " "
default_value = default_value + c.intensity
}
if (not Is_missing(c.hue)) {
if (len(default_value) > 0) default_value = default_value + " "
default_value = default_value + c.hue
}
}
if (len(default_value) > 0)
_enumeration.default = default_value
Category:
exptl_crystal
