Cuprite
Hafner S S, Nagel S
Physics and Chemistry of Minerals 9 (1983) 19-22
The electric field gradient at the position of copper in
Cu2O and electronic charge density analysis by means of K-factors
_database_code_amcsd 0007351
4.2696 4.2696 4.2696 90 90 90 Pn3
atom   x   y   z
Cu   .25 .25 .25
O      0   0   0