Witherite
Antao S M, Hassan I
Physics and Chemistry of Minerals 34 (2007) 573-580
BaCO3: high-temperature crystal structures and the Pmcn --> R3m phase
transition at 811 C
Locality: synthetic
Sample: T = 196 C
_database_code_amcsd 0009100
5.3190 8.9189 6.5019 90 90 90 Pmcn
atom     x     y      z  Uiso
Ba     .25 .4165  .7563 .0128
C      .25 .7403 -.0677 .0403
O1     .25 .8974 -.0784 .0403
O2   .4683 .6813 -.0765 .0403