Yegorovite
Zubkova N V, Pekov I V, Pushcharovskii D Y, Kazantsev S S
Doklady Earth Sciences 427 (2009) 814-818
Crystal structure of yegorovite Na4[Si4O8(OH)4]*7H2O
Locality: Lovozero alkaline complex, Kola Peninsula, Russia
_database_code_amcsd 0012513
9.8744 12.3981 14.8973 90 104.675 90 P2_1/c
atom      x      y      z  Uiso
Na1   .0532  .6184 .06992 .0275
Na2   .7635  .8608 .05829 .0286
Na3   .3045  .8923 .07159 .0311
Na4   .4902  .6251 .05502 .0298
Si1  .59375 .82135 .22737 .0138
Si2  .85409 .68222 .23240 .0125
Si3  .34122 .67253 .23305 .0138
Si4  .10049 .83149 .23761 .0152
O1    .0665  .4265  .0859 .0279
H1a    .033   .412   .125  .005
H1b    .134   .463   .106   .04
O2    .6751  .6900  .0002 .0282
H2a    .673   .675  -.056   .03
H2b    .690   .640   .046   .15
O3    .9783  .7937  .0089 .0388
H3a    .027   .851   .045   .05
H3b    .958   .809  -.059  .034
O4    .3337  .7544 -.0283 .0365
H4a    .252   .724  -.062   .08
H4b    .389   .783  -.064   .10
O5    .3959  .6184  .3321 .0195
O6    .9024  .6274  .3312 .0165
O7    .1549  .8839  .3376 .0223
O8    .6507  .8788  .3248 .0249
O9    .8697  .6008  .1481 .0170
H9     .867   .540   .157  .003
O10   .9385  .7913  .2161 .0199
O11   .4369  .7711  .2109 .0218
O12   .5796  .9035  .1385 .0234
H12    .629   .947   .170   .10
O13   .6876  .7188  .2082 .0181
O14   .1833  .7219  .2185 .0185
O15   .8270  .0419  .0922 .0290
H15a   .908   .073   .120  .005
H15b   .746   .058   .107   .08
O16   .3241  .5891  .1458 .0201
H16    .346  .5312   .148  .018
O17   .1186  .9136  .1562 .0210
H17    .123   .971   .172   .09
O18   .5769  .4585  .1060 .0303
H18a   .658   .452   .110   .04
H18b   .535   .428   .137  .018
O19   .3282  .0756  .0944 .0254
H19a   .405   .095   .123   .03
H19b   .261   .117   .117   .10