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Pyrite with Chalcocite surface coating. from Rico Argentine Mine, Rico, Colorado

 
Pyrite with Chalcocite surface coating. from Rico Argentine Mine, Rico, Colorado

DESCRIPTION:No. 12357
Mineral:Pyrite with Chalcocite surface coating.
Locality:Rico Argentine Mine, Rico, Colorado
Description:Large cluster of pyrite crystals (up to 8 cm!) with a steel-colored surface coating due to chalcocite. This coating is often incorrectly identified as bravoite. Excellent cluster, no damage. Originally acquired in 1962 from Scott Williams. Ex. Dr. Eugene E. Sensel (1911-2000) collection #B170
Overall Size:11x9x8 cm
Crystals:3-80 mm
Status: Sold - Posted here for reference only
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