Azurite, Malachite
Copper Duke Mine, Copper Duke Hill, Tiptop Mine group, Tiptop Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
6.8 x 3.8 x 2.8 cm. Mineral specimens from this obscure, small, former copper-silver-gold mine in the Helvetia District are extremely rare and are seldom available. This is a very aesthetic, colorful, lightweight, sponge-like, vuggy, box-work crust of multi-hued, bubby, botryoidal malachite nicely accented with royal-blue azurite botryoids. ...
© Rob Lavinsky & irocks.com