Silver Novgorodova M I, Gorshkov A I, Mokhov A V International Geology Review 23 (1981) 485-494 Native silver and its new structural modifications Locality: northeast USSR Note: sample DV-300, known as silver 4H _database_code_amcsd 0018575 2.88 2.88 9.62 90 90 120 P6_3/mmc atom x y z occ Ag 1/3 2/3 .25 .9855 Cu 1/3 2/3 .25 .0046 Fe 1/3 2/3 .25 .0001 Cr 1/3 2/3 .25 .0001 Ni 1/3 2/3 .25 .0001