Cinnabar Ramsdell L S American Mineralogist 10 (1925) 281-304 The crystal structures of some metallic sulfides Locality: unknown _database_code_amcsd 0000007 4.15 4.15 9.51 90 90 120 P3_221 atom x y z Hg 1/3 1/3 0 S 1/3 1/3 .5