Native Copper nugget (RARE California) Kay Robertson Coll.

Item Description

Mineral specimens of any variety are RARE from the old Foothill Copper Belt, a belt of copper mineralization in the foothills of the Sierra Nevada Range. Specimens from the Campo Seco District are EXTREMELY RARE. This is a flattened, rounded stream-worn nugget of bubbly botyroidal native copper, probably from an unknown placer deposit near Campo Seco. The bright copper alteration rind, possibly chrysocolla, adds dramatic color and pizzazz to this perhaps unique rarity. Choice copper from the Kay Robertson Collection # 6691 and acquired in 1972 at the Anaheim Federation Show. Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record). A MUST for the California or species collector!!