Bournonite on Pyrite (excellent “cogwheel”) red This mine is actually the

This mine is actually the LARGEST Cassiterite deposit in the world but is best known for its phosphate species

especially in such amazing condition

and the twins from Tasna are a favorite among collectors

and eye-catching “closed” twin of Ferberite with great form

white/colorless Quartz crystals aesthetically flaring out of the sides

Bournonite on Pyrite (excellent “cogwheel”) red This mine is actually theA very good quality, COMPLETE, sharp, lustrous, silvery colored classic cogwheel twinned crystal group is aesthetically flaring off lustrous, golden, octahedral metallic Pyrite matrix. The cogwheel is essentially undamaged, save the tiniest of Wilbers on the edge. Its amazing to me that you can see all sides of the cogwheel as its not buried into the Pyrite matrix, which is EXCEPTIONALLY RARE in my experience with the material. If youre a Bolivian