Malachite pseudomorph after Cuprite (classic material)

Item Description

This piece is a classic "floater" thumbnail specimen of the well-known and iconic Malachite pseudomorphs after Cuprite from Chessy (the type locality for Azurite!). The specimen shows textbook dodecahedral form with a mixture of greenish and dark reddish-brown hues due to oxidation on the surface. Although the Malachite pseudomorphs after Cuprite from Onganja, Namibia are typically bigger, they don't have the superb crystal form of these amazing old classics from Chessy. This is a very good quality specimen considering the age of the piece, and it is very difficult for collectors to obtain fine quality specimens of this material on the market. This specimen was mined circa mid 1800s. A great thumbnail for any collector, a collector of European classics, or anyone who appreciates secondary ore minerals.
From the collection of Richard ("Rich") A. Kosnar (1946-2007), the well-known mineral dealer and collector from Colorado, who was the namesake for the rare phosphate, Kosnarite. Rich named his company Mineral Classics because of his love of old European classics like this piece.