Siderite with Pyrite and Quartz

Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã Municipality, Castelo Branco District  Portugal (1998)

Specimen size: 9.6 × 6.4 × 3.2 cm = 3.78” × 2.52” × 1.26”
Main crystal size: 4.2 × 1.4 cm = 1.65” × 0.55”