Siderite with Quartz and Pyrite

Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã Municipality, Castelo Branco District  Portugal (1993)

Specimen size: 5.8 × 4.7 × 5 cm = 2.28” × 1.85” × 1.97”
Main crystal size: 5.6 × 2.6 cm = 2.20” × 1.02”