Volynskite
Bayliss P
American Mineralogist 76 (1991) 257-265
Crystal chemistry and crystallography of some minerals in the tetradymite group
_database_code_amcsd 0001346
4.468 4.468 20.75 90 90 120 P-3m1
atom   x   y    z
Ag     0   0   .5
Ag   1/3 2/3  2/3
Bi     0   0    0
Bi   1/3 2/3 .163
Te     0   0  .25
Te   1/3 2/3 .417
Te   1/3 2/3 .917