Tyrrellite
Yang H, Hubler D K, Lavina B, Downs R T, Costin G
Acta Crystallographica C63 (2007) i73-i74
Tyrrellite, Cu(Co0.68Ni0.32)2Se4, isostructural with spinel
Locality: Eagle Claims, Beaverlodge Lake area, Saskatchewan, Canada
_database_code_amcsd 0010334
9.98850 9.98850 9.98850 90 90 90 *Fd3m
0.125 0.125 0.125
atom      x       y       z occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2)  U(1,3)  U(2,3)
Cu     .125    .125    .125     .01020 .01020 .01020 .01020       0       0       0
Co       .5       0       0 .68 .00624 .00624 .00624 .00624 -.00031 -.00031 -.00031
Ni       .5       0       0 .32 .00624 .00624 .00624 .00624 -.00031 -.00031 -.00031
Se   .26192 -.01192 -.01192     .00705 .00705 .00705 .00705  .00027  .00027 -.00027