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 = 691 C
_database_code_amcsd 0009105
5.3336 8.9354 6.6877 90 90 90 Pmcn
atom     x     y      z  Uiso
Ba     .25 .4161  .7553 .0340
C      .25 .7516 -.0620 .0828
O1     .25 .8995 -.0714 .0828
O2   .4608 .6819 -.0778 .0828