AM_Marcasite_2 Formula: Fe (S1.6 As.4) Name: Marcasite Unit cell: 4.449 5.432 3.391 90.0 90.0 90.0 , V=81.95 Space group: PNNM (58)

Rieder M , Crelling J C , Sustai O , Drabek M , Weiss Z , Klementova M , International Journal of Coal Geology , 71 (2007) p.115-121, Arsenic in iron disulfides in a brown coal from the North Bohemian Basin,, Czech Republic, Locality: Dul CSA mine, North Bohemian Basin, Czech Republic, Sample: Natural As-marcasite