Chalcopyrite with Arsenopyrite, Pyrite and Muscovite

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã Municipality, Castelo Branco District  Portugal (1999)

Specimen size: 11.5 × 8.8 × 4.4 cm = 4.53” × 3.46” × 1.73”
Main crystal size: 1.9 × 1.6 cm = 0.75” × 0.63”