Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Ex. Sid Williams, Ex. Steve Pullman
White crystals of this rare sorosilicate from the type location. In one vug, there is also an unidentified clear crystal amongst the Cuspidine crystals. The Cuspidine fluoresces yellow under UV (a bit more yellow than in the photo). There is also a second unidentified mineral which fluoresces.