Sphalerite with Chalcopyrite, Siderite, Pyrite and Muscovite

Minas da Panasqueira, level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1967)

Specimen size: 5.8 × 4.5 × 5.2 cm = 2.28” × 1.77” × 2.05”