Quartz doubly terminated with Pyrite, Siderite and Chalcopyrite

Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (07/2015)

Specimen size: 8.4 × 5.8 × 3.7 cm = 3.31” × 2.28” × 1.46”
Main crystal size: 6.8 × 2.4 cm = 2.68” × 0.94”