AM_Caswellsilverite_1 Formula: Na Cr S2 Name: Caswellsilverite Unit cell: 3.5544 3.5544 19.492 90.0 90.0 120.0 , V=213.27 Space group: R-3M (166)

Engelsman F M R , Wiegers G A , Jellinek F , VanLaar B , Journal of Solid State Chemistry , 6 (1973) p.574-582, Crystal structures and magnetic structures of some metal chromium(III) sulfides and selenides, Locality: synthetic, Sample: T = 300 K