Argentotetrahedrite-(Fe) Johnson M L, Burnham C W American Mineralogist 70 (1985) 165-170 Crystal structure refinement of an arsenic-bearing argentian tetrahedrite _database_code_amcsd 0000964 10.530 10.530 10.530 90 90 90 I-43m atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Cu1 .25 .5 0 .633 .0049 .0016 .0016 0 0 0 Fe1 .25 .5 0 .24 .0049 .0016 .0016 0 0 0 Cu2 .2160 0 0 .647 .0101 .0122 .0122 0 0 -.0068 Ag2 .2160 0 0 .353 .0101 .0122 .0122 0 0 -.0068 Sb .2683 .2683 .2683 .675 .0023 .0023 .0023 -.0004 -.0004 -.0004 As .2683 .2683 .2683 .325 .0023 .0023 .0023 -.0004 -.0004 -.0004 S1 .1238 .1238 .3661 .0066 .0066 .0039 .0030 -.0011 -.0011 S2 0 0 0 5.2