Bournonite on Sphalerite
Noche Buena Mine, Sonora, Mexico
Small Cabinet, 7.2 x 6.4 x 3.4 cm
Ex. Richard Heck
Sharp, relatively large bournonite crystals for this locale are perched on lustrous black sphalerite crystals, associated with a druse of, sparkling, brassy yellow pyrite and minor drusy, white quartz. A few of the bournonite crystals are also doubly terminated. They are sharp and shwo the striations characteristic of this locale - once one of the world's great sources for this species