Vladykinite Chakhmourdian A R, Cooper M A, Ball N, Reguir E P, Medici L, Abdu Y A, Antonov A A American Mineralogist 99 (2014) 235-241 Vladykinite, Na3Sr4(Fe2+Fe3+)Si8O24: A new complex sheet silicate from peralkaline rocks of the Murun complex, eastern Siberia, Russia Locality: Murun complex, eastern Siberia, Russia _database_code_amcsd 0020023 5.21381 7.9143 26.0888 90 90.3556 90 P2_1/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na1 .5 .5 .5 .0278 .0125 .0464 .0244 -.0051 .0038 -.0174 Na2 .48483 .44221 .63351 .725 .0210 .0110 .0366 .0153 .0068 .0011 .0130 Ca2 .48483 .44221 .63351 .275 .0210 .0110 .0366 .0153 .0068 .0011 .0130 Sr1 .49578 .902940 .570050 .01107 .01124 .01049 .01149 .00041 .00051 -.00036 Sr2 .50609 .58890 .776998 .92 .01184 .01087 .01313 .01153 .00114 .00042 -.00075 K2 .50609 .58890 .776998 .02 .01184 .01087 .01313 .01153 .00114 .00042 -.00075 La2 .50609 .58890 .776998 .01 .01184 .01087 .01313 .01153 .00114 .00042 -.00075 Ce2 .50609 .58890 .776998 .005 .01184 .01087 .01313 .01153 .00114 .00042 -.00075 Fe2+ .00453 .75589 .675450 .375 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Fe3+ .00453 .75589 .675450 .33 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Mn .00453 .75589 .675450 .13 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Zn .00453 .75589 .675450 .08 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Al .00453 .75589 .675450 .06 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Mg .00453 .75589 .675450 .025 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Ti .00453 .75589 .675450 .005 .01134 .01494 .00987 .00921 .00097 .00026 .00018 Si1 .94527 .39083 .714236 .01073 .00941 .0103 .01253 -.00032 .00084 -.00214 Si2 .95867 .10612 .634013 .01018 .00984 .0119 .00877 .00098 .00032 -.00105 Si3 .05166 .23197 .531395 .00944 .01026 .00856 .00950 .00120 .00122 .00102 Si4 .02973 .60042 .567524 .00895 .00852 .0087 .00961 .00019 .00013 .00002 O1 .2494 .39304 .71818 .0175 .0110 .0194 .0219 -.0013 -.0005 -.0047 O2 .8052 .56879 .70091 .0180 .0159 .0131 .0249 .0020 .0017 .0000 O3 .7963 .32075 .76480 .0170 .0150 .0175 .0185 -.0008 .0047 -.0004 O4 .8411 .26336 .66773 .0169 .0118 .0193 .0198 .0010 -.0001 -.0093 O5 .7412 .58495 .86101 .0209 .0121 .0349 .0157 -.0069 -.0009 .0055 O6 .7921 -.05618 .65173 .0161 .0178 .0156 .0151 -.0010 .0020 .0015 O7 .8648 .14346 .57432 .0138 .0131 .0175 .0107 -.0037 -.0009 .0019 O8 .2852 .11891 .51492 .0155 .0168 .0168 .0131 .0074 .0028 .0010 O9 .1552 .41060 .55787 .0131 .0127 .0090 .0177 .0005 -.0001 -.0012 O10 .1358 .71048 .51702 .0130 .0119 .0140 .0133 .0000 .0007 .0036 O11 .7275 .60334 .57060 .0140 .0100 .0170 .0150 -.0001 .0007 .0000 O12 .1881 .67881 .61515 .0145 .0140 .0152 .0143 -.0010 -.0026 -.0017