This large piece (especially for the species) features a dense coating of black, lustrous, sharp Cassiterite crystals with minor clear Quartz on matrix from the famous Viloco Mine in Bolivia. The Cassiterite crystals are exceptionally large, very sharp and mirror-like and contrast nicely with the Quartz crystals. The crystal edges reveal an unexpected golden-brown translucency. A very aesthetic piece with great color, luster and crystal formation. In excellent condition.
Location: Viloco Mine, Loayza Province, La Paz Department, Bolivia
Size: 7.5 x 3 x 6.5 cm