Franckeite hexagonal which is one of my

which is one of my favorite phenomena in the mineral world

but please note that the right-most crystal is contacted on the termination

they would see small red reflections which are proof to the presence of manganese in the crystals

A hard to find "cogwheel" group of sharp

Specimen # BOL711B111

Franckeite hexagonal which is one of myThis 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