Sphalerite with Chalcopyrite, Siderite, Muscovite and Calcite

Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1967)

Specimen size: 7.2 × 6.7 × 5.7 cm = 2.83” × 2.64” × 2.24”
Main crystal size: 4.7 × 3.4 cm = 1.85” × 1.34”