Crystallographic Information Framework

[CIF logo]

Index

Twinning dictionary version 1.0

_twin_individual_twin_lattice_type

Name:
'_twin_individual_twin_lattice_type'

Definition:

   
   Identification of the symmetry relationships between the 
   twin lattices as described in International Tables 
   for Crystallography (2004), Vol. C, Chapter 1.3.  
   The twin with the identity matrix should be denoted as 'ref'.

Appears in list
The data value must be one of the following:


ref
reference twin

mt_I
merohedral class I (simple inversion)

mt_II
merohedral class II (mirror or twofold)

mt_I+II
class I and II simultaneously present

rmt
reticular merohedral

pmt
pseudo-merohedral

rpmt
reticular pseudo-merohedral

nmt
non-merohedral

Type: char

Category: twin