Bornite over Pyrite
Milpillas Mine, Mexico
Milpillas Mine, Cuitaca, Mun. de Santa Cruz, Sonora, Mexico
An outstanding bornite coated pyrite grouping on a white matrix from the Milpillas Mine in Sonora, Mexico! This complex pyrite crystals exhibits modified faces with wonderful growth striations. The pyrite is coated with a thin layer of bornite. Bornite has been confirmed by analysis done at the University of Arizona. A wonderful miniature from this now famous locality!