Copper in Gypsum (Kay Robertson Coll.)

Item Description

Bright, micro-dendritic copper with striking sculptural arborescent form in a sawed, transparent gypsum cleavage from the Mission Mine of Arizona. Old and very choice material. Such thick windowpane slices with rich forests of copper inside are almost never available! In person, looking at the internal meshwork, you can see how mesmerizing this is and why it is such a classic. Ex Kay Robertson Collection # 8671 and obtained from Arizona specialist Dennis Mullane at the 1979 Tucson Show. Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record).