#8
Cm
Gerstleyite – Na2Sb7AsS13•2(H2O)
Nakai I , Appleman D E
The crystal structure of gerstleyite Na2(Sb,As)8S13*2H2O
Chemistry Letters , 1981 (1981) p.1327-1330
CIF
http://rruff.geo.arizona.edu/AMS/download.php?id=14024.cif&down=cif
Na – blue
As – green
Sb – orange
S – yellow
Water – grey