Franckeite hexagonal Specimen # BOL711B111

Specimen # BOL711B111

The main Brookite is undamaged and is actually intergrown (bisected) with a smaller Brookite that created an interesting form at the base

and a surprise discovery from early 2011

For the size and aesthetic

A hard to find "cogwheel" group of sharp

Franckeite hexagonal Specimen # BOL711B111This fantastic specimen was mined in the late 1970s early 1980s and stands out as one of the best pieces of this material that I have offered from this prolific discovery. I think it goes without saying that the finest specimens of Franckeite are found at this mine. This is one of my favorite species from Bolivia, as it has an interesting chemistry, unique crystals, and it belongs to the only group of minerals that form naturally round or cylindrical