Cassiterite with Quartz, Dolomite and Tourmaline

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1972)

Specimen size: 5.8 × 4.1 × 4.5 cm = 2.28” × 1.61” × 1.77”
Main crystal size: 0.5 × 0.5 cm = 0.20” × 0.20”