AM_Laphamite_1 Formula: As2.04 Se2.25 S.71 Name: Laphamite Unit cell: 11.934 9.804 4.268 90.0 90.32 90.0 , V=499.35 Space group: P121/N1 (14)

Bindi L , Bonazzi P , Spry P G , The Canadian Mineralogist , 46 (2008) p.269-274, Effects of sulfur-for-selenium substitution on the structure of laphamite, As2(Se,S)3, Locality: Western Middle Anthracite field, Northumberland County, Pennsylvania, Sample: LAP2