Cuprian Austinite with Conichalcite and Chrysocolla (ex Clay Williams Collection)

Item Description

A cool specimen of Cuprian Austinite with Conichalcite from the famous Gold Hill Mine in Utah. Austinite is a calclium zinc arsenate named after Austin Flint Rogers, an American mineralogist at Stanford University. The Cuprian variety of Austinite is a gorgeous chrome green hue. The Austinite formed great sharp crystals with decent translucency and vitreous luster, and really look great up close with the "balls" of stark green Conichalcite on matrix. There are light blue spots on the specimen that I believe are Chrysocolla, but they could be Austinite (without the copper content). From the Clay Williams collection, and certainly good quality for the species.