Arsenopyrite with Muscovite on Ferberite
John Betts - Fine Minerals
Lustrous Arsenopyrite crystals to 20 mm with translucent bladed Muscovite crystals in hemispherical aggregates to 2 mm diameter with black Ferberite included on the bottom.
Yaogangxian Mine, Nanling Mountains, Hunan Province, China
20 x 20 x 16 mm.