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Velvet Malachite on Native Copper & Chalcophanite (rare combo) Urish Coll.
- Cole Shaft, Bisbee, Cochise Co., Arizona,
- Small Cabinet, 6.4 x 4.8 x 2.8 cm
- Start Time: 04/12/2012 6:30:00 pm (CDT)
- End Time: 04/19/2012 6:30:00 pm (CDT)
- Auction Closed
Item Description
Pretty, botryoidal, velvet malachite richly and attractively covers both sides of this showy, excellent and uncommon two-sided rib. The hefty matrix consists of a boxwork of platy, native copper with rich encrustations of purplish-black chalcophanite botryoids. Chalcophanite is a rare zinc, iron, manganese hydroxide found ONLY in very nice crystals at the Cole Shaft at Bisbee. The very rich Cole Shaft produced ore intermittently from 1905 to 1975. Ex Harold Urish Collection.