AM_Acanthite
Formula: Ag2 S
Name: Acanthite
Unit cell: 4.23 6.91 7.87 90.0 99.58 90.0 , V=226.83
Space group: P121/N1 (14)

Frueh A J , Zeitschrift fur Kristallographie , 110 (1958) p.136-144, The crystallography of silver sulfide, Ag2S, Locality: Freiberg, Saxony, Germany