mineral general info

Brilliant lustrous black to brown slightly translucent crystals of cassiterite to 7 x 7 mm in size scattered about a crystalline quartz matrix.

Origin: Level 240, Huanuni mine, Cerro Pozoconi, Huanuni, Dalence Prov., Oruro Dept, Bolivia

Ex Marvin Pearce collection

Sample size: 4 x 6.5 x 2 cm

Cassiterite with muscovite

Origin: Xue Bao Diang Mountain, north of Ping Wu (Pingwu), Sichuan Province, China

Sample size: 4.3 x 2.8 x 4.3 cm

Origin: Huanuni mine, Huanuni, Oruro Dept., Bolivia

Ex Gil Griffin collection

Sample size: 4 x 3 x 2.3 cm

Origin: Viloco (Araca) mine, Loayza Province, La Paz Department, Bolivia

Sample size: 3 x 4.3 x 2.9 cm

Photo courtesy of:

Dan Weinrich

This specimen of quartz is covered with honey yellow to brown coloured crystals of cassiterite. A few are doubly terminated.

Origin: Siglo Veinte Mine, Llallagua, Bolivia, South America

Ex. Frank Edwards collection

Sample size: 6 x 5.5 x 2.5 cm

Photo courtesy of:

John Veevaert, Trinity Mineral Co