Cassiterite with TourmalineThe 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 good, lustrous,

Considering the millions of tons of tin ore that Bolivia has yielded

and when backlit

Specimen #BURMA22104

Most people are familiar with the Copper pseudomorphs after Aragonite from this locality

I honestly have never seen another specimen as large and as rich as this one

Specimen # BOL711B77

which hopefully could one day produce specimens of the same size and quality as those from Unificada

and it resided in his collection until he passed in 2025

bright yellow-green hexagonal crystals of Pyromorphite sit atop Sandstone matrix

This piece is from a one pocket find in 2003

Keep in mind that this is one of the rarest sulfosalts in the world

and the top specimens from this area in Bolivia are among the best around