Bredigite Moore P B, Araki T American Mineralogist 61 (1976) 74-87 The crystal structure of bredigite and the genealogy of some alkaline earth orthosilicates _database_code_amcsd 0000494 10.909 18.340 6.739 90 90 90 P2nn atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca1 0 0 0 .707 .00488 .00123 .00502 0 0 .00068 Ba 0 0 0 .293 .00488 .00123 .00502 0 0 .00068 Ca2 .5016 0 0 .00537 .00064 .00518 0 0 -.00031 Ca3 .2362 .2284 -.0003 .00147 .00049 .00412 .0004 -.00030 -.00027 Ca4 .7728 .2272 .0056 .00181 .00100 .00527 .0001 -.00085 .00000 Ca5 .2564 .4103 .1540 .88 .00272 .00110 .00650 -.00041 -.00021 .00093 Mg3 .2564 .4103 .1540 .12 .00272 .00110 .00650 -.00041 -.00021 .00093 Ca6 .7556 .4119 .1614 .00298 .00067 .00334 -.00073 -.00138 -.00074 Ca7 .0081 .1722 .3310 .00308 .00092 .00584 -.00052 .0002 -.00040 Ca8 .5061 .1654 .3008 .00213 .00162 .00550 -.0007 .0009 .00039 Mg1 -.0003 .5 0 .64 .00124 .00059 .00456 0 0 .00030 Mn1 -.0003 .5 0 .36 .00124 .00059 .00456 0 0 .00030 Mg2 .5002 .5 0 .93 .00075 .00036 .00228 0 0 -.00007 Mn2 .5002 .5 0 .07 .00075 .00036 .00228 0 0 -.00007 Si1 .7542 .0811 .2188 1.0 Si2 .2594 .0798 .2199 0.7 Si3 .0037 .1649 -.2341 0.8 Si4 .0043 .3364 .2831 0.8 O1 .6388 .0259 .2695 2.4 O2 .8681 .0495 .3444 1.5 O3 .7196 .1605 .3054 1.1 O4 .7885 .0883 -.0081 2.1 O5 .1285 .0609 .3311 2.2 O6 .3626 .0241 .2900 0.9 O7 .2923 .1592 .3233 1.7 O8 .2294 .0913 -.0103 1.1 O9 -.1130 .1991 -.3463 4.6 O10 .1249 .1985 -.3393 0.3 O11 -.0042 .0796 -.2794 2.1 O12 .0057 .1912 -.0110 2.2 O13 -.1219 .2900 .25 0.6 O14 .1198 .2850 .2699 2.0 O15 .0127 .3969 .1015 1.3 O16 -.0006 .3760 .4934 1.2