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#MSAZ0028
Bornite, Pyrite
Milpillas Mine, Cuitaca, Mun. de Santa Cruz, Sonora, Mexico
2.9x2.6x1.7cm
An absolutely stunning single crystal of pyrite coated with a steel-blue layer of bornite from the Milpillas Mine in Sonora, Mexico! The pyrite is incredible, exhibiting many modified faces. The crystal sits perched upon a small bit of white matrix. The bornite coating has been confirmed by analysis done at the University of Arizona. A fantastic thumbnail pyrite from this now famous locality!