Arsenopyrite with Chalcopyrite, Cassiterite y Sphalerite

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1964)

Specimen size: 7.7 × 5.7 × 3 cm = 3.03” × 2.24” × 1.18”
Main crystal size: 2.4 × 2 cm = 0.94” × 0.79”