Ellingsenite
Yakovenchuk V N, Ivanyuk G Y, Pakhomovsky Y A, Selivanova E A, Mikhailova J A,
Krivovichev S V, Zolotarev A A, Zalkind O A
The Canadian Mineralogist 49 (2011) 1165-1173
Ellingsenite, Na5Ca6Si18O38(OH)13*6H2O, a new martinite-related mineral species
from phonolite of the Aris alkaline complex, Namibia
Locality: Ariskop quarry, Aris alkaline complex, Namibia
Note: This is reported as an incomplete structure
_database_code_amcsd 0018739
9.576 9.577 16.438 85.85 75.23 60.142 P-1
atom      x      y      z occ  Uiso
Na1      .5      0     .5      .021
Na2   .8448 -.2128  .7107 .86  .017
Ca1   .3564 -.2907 -.5025     .0152
Ca2   .0818 -.8582 -.5130     .0125
Ca3   .7756 -.4159 -.4942 .55  .018
Na3   .7756 -.4159 -.4942 .45  .018
Si1   .4595 -.4440 -.2301     .0166
Si2   .8056 -.6630 -.3328     .0125
Si3   .2987  .4577 -.3268     .0139
Si4   .0501 -.0324 -.3309     .0114
Si5   .9247 -.4153 -.3246     .0147
Si6   .4183 -.1603 -.3312     .0128
Si7   .5453  .0888 -.3254     .0135
Si8   .7899 -.1100 -.2225     .0161
O1     .085 -.0778 -.4272      .015
O2     .930  -.365 -.4182      .033
O3     .664   .067 -.4171      .019
O4     .370   .479 -.4222      .021
O5     .815 -.6616 -.4293      .015
O6    .7816 -.1980 -.5624      .013
O7     .392   .271 -.3022      .021
O8     .757  -.091 -.1237      .042
O9     .870  -.550 -.3030      .021
O10    .932  -.841 -.3092      .018
O11    .638   .044 -.2506      .018
O12    .109   .496 -.3075      .021
O13    .495  -.231 -.4249      .017
O14    .308  -.438 -.2593      .019
O15    .963  -.121 -.2697      .020
O16    .625  -.606 -.2730      .023
O17    .454  -.018 -.3154      .018
O18    .214  -.072 -.3035      .019
O19    .482  -.291 -.2622      .020
O20    .802  -.272 -.2505      .023
O21    .421  -.440 -.1317      .041
Wat22  .385   .084  -.187 .25   .05
Wat23  .915  -.222  -.857 .73   .05