Cassiterite - Minas da Panasqueira, Portugal - 5.8 x 4.1 x 2.8 cm

Mineral: Cassiterite
Locality: Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
Dimensions: 5.8 x 4.1 x 2.8 cm

Description: Lustrous partially gemmy dark brown cassiterite crystals on a matrix of silvery muscovite, with several quartz crystals on the reverse side.