Fencooperite Grice J D The Canadian Mineralogist 39 (2001) 1065-1071 The crystal structure of fencooperite: Unique [Fe3O13] pinwheels cross-connected by [Si8O22] islands _database_code_amcsd 0005724 10.7409 10.7409 7.0955 90 90 120 P3m1 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ba1 .82749 .17251 0 .0216 .0101 .0101 .0447 .0053 -.0003 .0003 Ba2 .51607 .48393 .5006 .0134 .0132 .0132 .0091 .0032 .0001 -.0001 Fe .4373 .5627 .0010 .0098 .0075 .0075 .0115 .0015 -.0002 .0002 Si1 0 0 .7218 .007 .005 .005 .010 .0027 0 0 Si2 .1678 .3356 .7284 .0092 .015 .007 .002 .0036 .0008 .002 Si3 0 0 .2789 .008 .010 .010 .004 .0053 0 0 Si4 .1669 .8331 .2704 .0118 .020 .020 .006 .019 .0011 -.0011 C1 2/3 1/3 .181 .049 C2 2/3 1/3 .716 .039 O1 0 0 .498 .047 .065 .065 .009 .032 0 0 O2 .0822 .1644 .797 .019 .030 .014 .008 .007 .002 .005 O3 .3316 -.0777 .804 .024 .014 .036 .025 .014 .011 .017 O4 .167 .334 .505 .060 .119 .019 .007 .010 -.002 -.004 O5 .0819 .1638 .199 .012 .015 .011 .009 .006 -.001 -.002 O6 .5933 -.0769 .196 .019 .011 .025 .023 .010 .000 -.011 O7 1/3 2/3 -.006 .018 .007 .007 .041 .003 0 0 O8 .5972 .4028 .176 .062 .041 .041 .100 .018 .008 -.008 O9 .7366 .2634 .711 .036 .027 .027 .055 .0014 .004 -.004 OW10 1/3 2/3 .504 .048 .052 .052 .041 .026 0 0 Cl .8361 .1639 .501 .54 .034 .031 .031 .032 .008 -.000 .000 OH .8361 .1639 .501 .46 .034 .031 .031 .032 .008 -.000 .000