Shafranovskite
Krivovichev S V, Yakovenchuk V N, Armbruster T, Pakhomovsky Y A,
Weber H-P, Depmeier W
American Mineralogist 89 (2004) 1816-1821
Synchrotron X-ray diffraction study of the structure of shafranovskite,
K2Na3(Mn,Fe,Na)4[Si9(O,OH)27].nH2O, a rare manganese silicate
from Kola peninsula, Russia
Locality: Kola peninsula, Russia
_database_code_amcsd 0003660
14.519 14.519 21.062 90 90 120 P31c
atom      x     y      z occ  Uiso
Na1   .0681 .5602  .7052      .043
Na2   .2252 .8230  .7248      .043
Na3   .9206 .4395  .4498      .096
K1    .1909 .7494  .4561      .081
K2    .1464 .9166  .9865 .90  .068
Mn1   .9629 .7169 .71758      .033
Mn2   .9150 .2978 .71055      .030
Mn3   .8563 .8767  .7376 .82  .041
Mn4   .8092 .4569 .69027 .80  .028
Si1   .9527 .6271  .5734     .0353
Si2       0     0  .6080      .033
Si3   .9511 .8083  .8625      .051
Si4   .0546 .6703  .8464     .0411
Si5   .0996 .8621  .5978     .0353
Si6   .7082 .5229  .5676     .0353
Si7   .9916 .2923  .8547      .043
Si8   .8978 .4320  .8288     .0393
Si9   .0563 .3964  .5849     .0343
Si10    2/3   1/3  .8197      .038
Si11    2/3   1/3  .4923 .72  .035
O1    .0964 .8446  .6737      .041
O2    .9496 .6004  .6452      .043
O3    .0464 .3989  .6572      .044
OH4   .8408 .7411  .6739      .051
O5    .8824 .9240  .5775      .033
O6    .6627 .6002  .5506      .050
OH7   .8156 .5869  .7518      .043
OH8   .1314 .5110  .5521      .060
O9    .2125 .8924  .5651      .037
OH10  .0893 .3668  .8974      .075
O11   .0655 .6929  .7722      .039
O12   .7980 .3095  .6395      .067
O13   .8262 .7504  .8825      .060
OH14  .1570 .7087  .8844      .065
OH15    2/3   1/3  .4164 .72  .055
O16   .9745 .8456  .7891      .068
O17   .7149 .7277  .7802      .044
O18       0     0  .6826      .041
OH19  .0100 .9045  .9110      .069
OH20  .0076 .5850  .5232      .045
O21   .0892 .4307  .3646      .046
O22   .6471 .4233  .5196      .048
O23   .9856 .7203  .8785      .059
O24   .7546 .1695  .5481      .046
Wat25 .4569 .7811  .6385      .086
O26   .0096 .7536  .5616      .040
O27     2/3   1/3  .7425      .044
O28   .9087 .4267  .7557      .040
O29   .9853 .5450  .8638      .045
Wat30 .3500 .7967  .7853      .080
O31   .7811 .4129  .8491      .049
Wat32   1/3   2/3  .4932      .174