Siderite with Quartz, Siderite inclusions and Arsenopyrite

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã Municipality, Castelo Branco District  Portugal

Specimen size: 11.2 × 8.1 × 7.6 cm = 4.41” × 3.19” × 2.99”
Main crystal size: 8.9 × 3.6 cm = 3.50” × 1.42”