Twinned Cassiterite crystals with very well defined faces and edges, translucent, bright and with a brown color with reddish reflections. They are implanted on a group of Quartz crystals, some of them doubly terminated, with Pyrite and Muscovite. The sample is old, found more than twenty years ago.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal
Specimen size: 12.3 × 11 × 7 cm = 4.84” × 4.33” × 2.76”
Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”
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