Pharmacosiderite Buerger M J, Dollase W A, Garaycochea-Wittke I Zeitschrift fur Kristallographie 125 (1967) 92-108 The structure and composition of the mineral pharmacosiderite Note: the K atom could not be located Locality: Cornwall, England _database_code_amcsd 0010644 7.9816 7.9816 7.9816 90 90 90 P-43m atom x y z occ Biso Fe .1426 .1426 .1426 1.1 As .5 0 0 1.5 O1 .1223 .1223 .3787 1.8 O2 .8847 .8847 .8847 1.2 Wat3 .068 .5 .5 .5 3.3 Wat4 .694 .694 .694 .5 2.5