This specimen with unusually bright, brassy yellow, intergrown pyrite crystals also contains a large crystal of bornite plunked in the middle! The black, sharp bornite crystal is 3.1 cm in length. AMAZING size and quality for the bornite, especially from this locality! this is a world class piece, though, beyond its significance for the locale! What makes it so special is that often the bornites from here or anywhere are on boring matrix. this one has pizzazz!