Bornite over Pyrite
Milpillas Mine, Mexico
Milpillas Mine, Cuitaca, Mun. de Santa Cruz, Sonora, Mexico
A stunning pyrite specimen on matrix from new production in the sulfide ore body at the Milpillas Mine in Sonora, Mexico! This specimen features a complex pyrite crystal with modified faces, nestled in a white matrix. The pyrite exhibits extraordinary luster that causes the specimen to shimmer when held in the hand. A partial coating of bornite gives the specimen some irridescence on certain faces. Bornite has been confirmed by analysis done by the University of Arizona. A wonderful miniature from this now famous locality!