Tsaregorodtsevite
Sokolova E V, Rybakov V B, Pautov L A
Soviet Physics Doklady 36 (1991) 267-269
The crystal structure of a new natural tetramethylammonium aluminosilicate
[N(CH3)4][Si2(Si0.5Al0.5)O6]2
Note: H atoms not located
Locality: Northern Ural Mountains, Mankhambo region, Russia
_database_code_amcsd 0020490
8.984 8.937 8.927 90 90 90 I222
atom      x     y     z occ Biso
N         0     0     0      1.8
C1     .384  .373  .501 1/3  3.8
C2     .381  .507  .374 1/3  4.8
C3     .001  .117  .121 1/3  4.9
Si1       0 .2511    .5     1.08
Si2      .5     0 .2491     1.05
Si3   .2502     0    .5  .5 1.09
Al3   .2502     0    .5  .5 1.09
O1   -.1463 .1499  .497     3.45
O2    .1456  .499 .1491      3.8
O3     .007 .3540 .3531      3.9