A fluorescent adamite crystal bed on matrix found in Mina Ojuela, Mapimi, Durango, Mexico, these excellent mineral specimens are a must have for any serious collector, they a approximately 15 mm in size and exhibit numerous, minute, pale yellow coloured crystals of adamite with a vitreous lustre. The mineral is a zinc arsenate, often found above zine ore deoosits, first described by the French mineralogist Gilbert-Joseph Adam, its type locality is in Chañarcillo, Chile. However, though, the pieces are small, they exhibit a big feature, when exposed to shortwave UV lighting, the crystals glow a vibrant, other worldly green colour, making this hard to come by pieces an excellent choice to add to collections. Particularly if you are keen on specimens from Latin America or ones with fluorescent properties. The samples come supplied mounted on a thin polystyrene base and in a card tray with the information typed on to the back inside.