Ferroindialite
Chukanov N V, Aksenov S M, Pekov I V, Ternes B, Schuller W, Belakovskiy D I,
Van K V, Blass G
Geology of Ore Deposits 56 (2014) 637-643
Ferroindialite (Fe2+,Mg)2Al4Si5O18, a new beryl-group mineral from the Eifel
volcanic region, Germany
Locality: Caspar basalt quarry, Eifel volcanic district, Germany
_database_code_amcsd 0020462
9.8759 9.8759 9.3102 90 90 120 P6/mcc
atom      x     y     z    occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K1        0     0    .5    .06  .023   .020   .020    .03   .010      0      0
Na1       0     0    .5    .03  .023   .020   .020    .03   .010      0      0
Fe2+1   2/3   1/3   .25   .575 .0084  .0088  .0088  .0077  .0044      0      0
Mg1     2/3   1/3   .25   .425 .0084  .0088  .0088  .0077  .0044      0      0
Al1      .5     0   1/3    .46 .0091  .0101  .0088  .0081  .0044      0      0
Fe3+1    .5     0   1/3    .04 .0091  .0101  .0088  .0081  .0044      0      0
Si1   .3703 .1040     0 .82333 .0097  .0149  .0094  .0070  .0078      0      0
Al2   .3703 .1040     0 .17667 .0097  .0149  .0094  .0070  .0078      0      0
O1    .3124 .2320     0        .0238   .029   .034  .0194   .024      0      0
O2    .4821 .1326 .1452        .0139  .0180  .0158  .0109  .0108 -.0063 -.0036