Cassiterite with Quartz and Siderite

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

Specimen size: 3.2 × 2.8 × 2.4 cm = 1.26” × 1.10” × 0.94”
Main crystal size: 1.5 × 1.2 cm = 0.59” × 0.47”