Proustite Allen S Phase Transition 6 (1985) 1-24 Phase transitions in proustite I. Structural studies Sample: T = 63 K _database_code_amcsd 0014939 10.768 10.768 8.720 90 90 120 R3c atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ag .2478 .2973 .2192 3.11 .008941 .009027 .008022 .010982 .004673 .000123 As 0 0 0 1.40 S .2119 .0929 .3763 1.88