Arcanite Robinson M Journal of Physical Chemistry 62 (1958) 925-928 The crystal structures of beta-K2SO4 and of beta-K2PO3F _cod_database_code 1200011 _database_code_amcsd 0018287 7.456 10.08 5.776 90 90 90 Pnam atom x y z K1 .1768 .0818 .25 K2 -.0115 .7046 .25 S1 .2358 .4155 .25 O1 .0315 .4032 .25 O2 .2970 .5579 .25 O3 .2997 .3484 .0410