Fenaksite
Golovachev V P, Drozdov Y N, Kuz'min E A, Belov N V
Soviet Physics Doklady 15 (1971) 902-904
The crystal structure of phenaxite FeNaK(Si4O10)(KNaFe[Si4O10])
Locality: Khibiny massif, Kola Peninsula, Russia
_database_code_amcsd 0015598
6.98 8.24 9.98 114.2 80.23 115.6 P-1
atom    x    y    z Biso
K    .140 .809 .010   .6
Na   .525 .270 .410   .6
Fe2+ .049 .299 .407   .6
Si1  .669 .913 .213   .6
Si2  .230 .631 .270   .6
Si3  .380 .304 .131   .6
Si4  .803 .632 .273   .6
O1   .630 .856 .041   .6
O2   .294 .457 .133   .6
O3   .632 .424 .167   .6
O4   .431 .838 .286   .6
O5   .791 .798 .230   .6
O6   .790 .139 .280   .6
O7   .033 .629 .205   .6
O8   .175 .589 .418   .6
O9   .760 .655 .436   .6
O10  .251 .192 .237   .6