Pyrophanite
Liferovich R P, Mitchell R H
Physics and Chemistry of Minerals 32 (2005) 442-449
Rhombohedral ilmenite group nickel titanates with Zn, Mg, and Mn:
synthesis and crystal structures
_database_code_amcsd 0008979
5.0770 5.0770 13.9727 90 90 120 R-3
atom     x     y     z occ Biso
NiA      0     0 .3578 .25  .56
MnA      0     0 .3578 .25  .56
ZnA      0     0 .3578 .25  .56
MgA      0     0 .3578 .25  .56
TiB      0     0 .1459      .22
O1   .3202 .0240 .2462      .60