Grandreefite
Kampf A R
American Mineralogist 76 (1991) 278-282
Grandreefite, Pb2F2SO4: Crystal structure and relationship to the lanthanide
oxide sulfates, Ln2O2SO4
_database_code_amcsd 0001350
8.667 4.4419 14.242 90 107.418 90 A2/a
atom     x     y     z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Pb   .0785 .5089 .1548      0.0024 0.0075 .00052 0.0024 .00062 0.0003
S      .25  .050     0  0.2
F     .127  .967  .247  1.0
O1    .115  .252  .003  1.1
O2    .299  .858  .090  1.1