Chalcopyrite with Arsenopyrite and Siderite

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

Specimen size: 13.1 × 10.4 × 7.1 cm = 5.16” × 4.09” × 2.80”
Main crystal size: 5 × 3.3 cm = 1.97” × 1.30”