Natural History, including Gorgosaurus
Natural History, including Gorgosaurus
Wulfenite and Mimetite
No reserve
Auction Closed
July 28, 03:27 PM GMT
Estimate
2,500 - 3,500 USD
Lot Details
Description
Wulfenite and Mimetite
San Francisco Mine, Cerro Prieto, Cucurpe, Sonora, Mexico
3 by 1¾ by 1¼ inches (7.6 x 4.4 x 3.2 cm). Custom lucite base.
This specimen features dozens of deep orange mimetite balls perched around and included within the water-clear, very glassy, yellow wulfenite window panes.
Usually found as thin, flat crystals with a bright red to orange to yellow hue, wulfenite is a lead molybdate mineral that crystallizes in the tetragonal system.
Mimetite is a secondary mineral, formed by the oxidation of lead minerals, usually in arsenic-bearing lead deposits. The specimen offered here displays mimetite's characteristic amber hues and hexagonal crystals.