Sphalerite Skinner B J American Mineralogist 46 (1961) 1399-1411 Unit-cell edges of natural and synthetic sphalerites Locality: synthetic _database_code_amcsd 0000110 5.4093 5.4093 5.4093 90 90 90 F-43m atom x y z Zn 0 0 0 S .25 .25 .25