Danalite
Hassan I, Grundy H D
American Mineralogist 70 (1985) 186-192
The crystal structures of helvite group minerals, (MnFeZn)8(Be6Si6O24)S2
_database_code_amcsd 0000972
8.232 8.232 8.232 90 90 90 P-43n
atom     x     y     z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Fe   .1693 .1693 .1693  .0069  .0069  .0069  .0003  .0003  .0003
O    .1395 .1401 .4126  .0070  .0068  .0058  .0023  .0012  .0012
Be     .25     0    .5  .0078  .0059  .0059      0      0      0
Si     .25    .5     0  .0037  .0029  .0029      0      0      0
S        0     0     0  .0103  .0103  .0103      0      0      0