Semenovite-(Ce) Mazzi F, Ungaretti L, Dal Negro A, Petersen O V, Ronsbo J G American Mineralogist 64 (1979) 202-210 The crystal structure of semenovite _database_code_amcsd 0000705 13.879 13.835 9.942 90 90 90 Pmnn atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ce1 .1390 0 0 .80 .0012 .0015 .0028 0 0 -.0003 Na1 .1390 0 0 .14 .0012 .0015 .0028 0 0 -.0003 Na2 .1349 0 .5 .56 .0053 .0067 .0087 0 0 .0013 Ce2 .1349 0 .5 .20 .0053 .0067 .0087 0 0 .0013 Fe3 .5 0 .5 .40 .0024 .0018 .0038 0 0 .0001 Mn3 .5 0 .5 .40 .0024 .0018 .0038 0 0 .0001 Fe4 .5 0 0 .10 .0039 .0013 .0026 0 0 .0012 Mn4 .5 0 0 .10 .0039 .0013 .0026 0 0 .0012 Ca5 .1385 .2097 .0128 .52 .0015 .0022 .0023 .0008 .0002 .0001 Na5 .1385 .2097 .0128 .48 .0015 .0022 .0023 .0008 .0002 .0001 Na6 .1431 .3060 .5053 .87 .0017 .0038 .0040 .0010 .0004 -.0013 Ca6 .1431 .3060 .5053 .13 .0017 .0038 .0040 .0010 .0004 -.0013 Si1 .3373 -.0044 .2532 .0013 .0018 .0040 .0004 -.0003 .0000 Si2 .2045 .1509 .2789 .80 .0007 .0011 .0021 .0000 -.0002 -.0001 Be2 .2045 .1509 .2789 .20 .0007 .0011 .0021 .0000 -.0002 -.0001 Be3 .2043 .1547 .7769 .80 .0015 .0033 .0044 .0001 .0006 .0006 Si3 .2043 .1547 .7769 .20 .0015 .0033 .0044 .0001 .0006 .0006 Si4 .5 .1297 .2364 .80 .0014 .0010 .0020 0 0 -.0009 Be4 .5 .1297 .2364 .20 .0014 .0010 .0020 0 0 -.0009 Be5 .5 .1388 .7289 .80 .0015 .0030 .0064 0 0 .0041 Si5 .5 .1388 .7289 .20 .0015 .0030 .0064 0 0 .0041 Si6 0 .1493 .2350 .0010 .0020 .0042 0 0 .0004 Si7 0 .1513 .7466 .0020 .0024 .0048 0 0 .0004 O1 .2490 .2473 .3393 .0027 .0016 .0030 -.0003 -.0009 -.0008 O2 .2668 .0627 .3473 .0019 .0021 .0043 .0007 .0000 -.0002 O3 .2703 .0649 .8477 .0017 .0012 .0046 .0006 .0003 .0001 O4 .4061 .0737 .1713 .0014 .0023 .0040 -.0001 -.0005 .0003 O5 .4065 .0742 .6567 .0014 .0016 .0051 -.0001 .0004 .0003 O6 .0940 .1379 .3375 .0009 .0040 .0030 .0001 -.0005 .0001 O7 .0963 .1395 .8393 .0009 .0038 .0048 .0003 -.0002 .0015 O8 .2023 .1449 .1172 .0019 .0019 .0021 -.0001 .0002 .0002 F9 .2066 .1547 .6208 .0020 .0021 .0028 -.0002 .0000 -.0001 O10 .5 .2397 .1699 .0017 .0018 .0047 0 0 -.0011 O11 .5 .2450 .6648 .0027 .0020 .0034 0 0 -.0001 O12 .5 .1328 .3934 .0024 .0031 .0018 0 0 .0003 OH13 .5 .1361 .8857 .0025 .0030 .0039 0 0 -.0003 O14 0 .0619 .1234 .0014 .0024 .0044 0 0 -.0009 OH15 0 .0756 .6209 .0026 .0021 .0085 0 0 -.0018