Valentinite
Buerger M J
American Mineralogist 21 (1936) 206-207
The crystal structure of valentinite
_database_code_amcsd 0000015
4.92 12.46 5.42 90 90 90 Pccn
atom     x    y     z
Sb   .1215 .207  .175
O1     .25  .25 -.075
O2   -.110 .156  .175