Strontianite de Villiers J P R American Mineralogist 56 (1971) 758-767 Crystal structures of aragonite, strontianite, and witherite _database_code_amcsd 0000234 5.090 8.358 5.997 90 90 90 Pmcn atom x y z Biso Sr .25 .4160 .7569 .508 C .25 .7601 -.0864 .592 O1 .25 .9119 -.0946 .913 O2 .4694 .6821 -.0839 .797