Siderite with Pyrite (octahedral)

Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã Municipality, Castelo Branco District  Portugal (1980)

Specimen size: 9 × 8.3 × 5.7 cm = 3.54” × 3.27” × 2.24”
Main crystal size: 2 × 1.4 cm = 0.79” × 0.55”