Potarite
Bayliss P
The Canadian Mineralogist 28 (1990) 751-755
Revised unit cell dimensions, space group,
and chemical formula of some metallic minerals
Note: cell edges taken from Handbook of Mineralogy
_database_code_amcsd 0005246
3.026 3.026 3.702 90 90 90 P4/mmm
atom  x  y  z
Hg    0  0  0
Pd   .5 .5 .5