Arsenopyrite with Pyrite, Fluorapatite and Siderite

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

Specimen size: 20 × 13.5 × 7.5 cm = 7.87” × 5.31” × 2.95”
Main crystal size: 1.7 × 1.2 cm = 0.67” × 0.47”