Ferberite (multi-twinned specimen!)This was one of the very few multi twinned pieces from the find of these amazing specimens in June of 2010. This species was sometimes previously referred to as "Wolframite", which was supposed to be an intermediary species between Ferberite and Hubnerite, but has since been discredited. This exquisite piece features sharp, highly lustrous, jet black blades of Ferberite which are twinned along the a {100} face. It is not a simple twinned specimen, as

very little followed

colorless Quartz crystals

Specimen # BOL711B125

This piece features rare

An impressive Wavellite for the locality

Specimen # BROOK31902

I kept it as a memento of those early years visiting Bolivia

Specimen # BOL711B09

I found one small orange-red crystal group which I believe to be the uncommon iron sulfate

brownish Limonite and black Sphalerite matrix

tabular blades

The terminations on the above specimen are very sharp and lustrous