Cassiterite ex I love how the black

I love how the black "phantoms" in the crystals run in thin vertical lines to create beautiful symmetry in the Brookites

you almost never see specimens available on the market

black cyclic twinned crystals which are associated with Quartz on matrix

A large percentage of the Cassiterites from this mine are rarely found with any associated minerals

Cassiterite ex I love how the blackThe Viloco Mine (sometimes called Araca) for many years has stood as one of the top Cassiterite localities in the world. This mine is still active today and bears the unique distinction of producing the only GEM quality (facet grade) Cassiterites from any mine in Bolivia. Considering the millions of tons of tin ore that Bolivia has yielded, the fact that only one mine ever produced transparent Cassiterite is remarkable. This piece is a great, classic,