Sphalerite with Chalcopyrite, Arsenopyrite and Siderite

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1987-2013)

Specimen size: 3.7 × 3.2 × 2.8 cm = 1.46” × 1.26” × 1.10”
Main crystal size: 3 × 2.7 cm = 1.18” × 1.06”