Anhydrite
Antao S
Powder Diffraction 26 (2011) 326-330
Crystal-structure analysis of four mineral samples of anhydrite, Ca(SO4),
using synchrotron high-resolution powder X-ray diffraction data
_database_code_amcsd 0020857
7.00071 6.99274 6.24125 90 90 90 Amma
atom     x     y      z  Uiso
Ca     .75     0 .34637 .0081
S      .25     0  .1554 .0071
O1     .25 .1733  .0164 .0079
O2   .0797     0  .2967 .0077