Walstromite Barkley M C, Downs R T, Yang H American Mineralogist 96 (2011) 797-801 Structure of walstromite, BaCa2Si3O9, and its relationship to CaSiO3-walstromite and wollastonite-II Locality: Esquire No. 8 claim, Big Creek, Fresno County, California, U.S.A. _database_code_amcsd 0018336 6.7335 9.6142 6.6859 69.638 102.281 96.855 P-1 atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca1 .27564 .50942 .76296 .01177 .01328 .01067 .01086 .00050 .00405 -.00192 Ca2 .43704 .82810 .94439 .00973 .00867 .01155 .01055 .00086 .00318 -.00471 Ba1 .04730 .84865 .32147 .01220 .01371 .01095 .01248 .00202 .00236 -.00413 Si1 .09661 .22212 .15253 .00860 .00818 .00875 .00930 -.00041 .00331 -.00279 Si2 .23397 .48134 .28615 .00874 .00844 .00939 .00968 .00095 .00362 -.00348 Si3 .44128 .19622 .51332 .00879 .00847 .00997 .00787 .00055 .00220 -.00244 O1 .23339 .26112 -.02934 .01177 .01090 .01264 .01235 .00008 .00539 -.00314 O2 -.10090 .12277 .10406 .01177 .00991 .01151 .01378 -.00041 .00242 -.00425 O3 .04567 .37136 .20048 .01173 .01061 .01152 .01307 .00140 .00323 -.00321 O4 .37296 .55630 .10710 .01154 .01125 .01280 .01060 -.00164 .00496 -.00293 O5 .13494 .58601 .36970 .01465 .01829 .01186 .01588 .00246 .00637 -.00473 O6 .35978 .35593 .50597 .01215 .01505 .01043 .01124 .00130 .00300 -.00336 O7 .61408 .23412 .36858 .01143 .01126 .01332 .01122 -.00103 .00538 -.00454 O8 .50803 .09161 .75696 .01287 .01634 .01203 .00967 .00181 .00256 -.00245 O9 .23046 .12449 .39321 .01069 .01070 .01011 .01072 .00036 .00238 -.00258