Azurite with Malachite (ex Kay Robertson Collection)

Tiger, Mammoth District, Pinal County, Arizona, USA
Cabinet, 10.7 x 6.6 x 5.3 cm
Start Time: 01/20/2022 9:00:00 pm (CST)
End Time: 01/27/2022 6:45:00 pm (CST)
Auction Closed
Winning Bidder: Private Bidder

Item Description

This piece came labeled simply as coming from "Tiger", and I don't know if it's specifically from the Mammoth-Saint Anthony Mine or a lesser locality like the Mohawk Mine. With that said, it's a very impressive full cabinet sized display specimen multiple alternation layers of sparkling midnight blue Azurite and soft green to bluish-green Malachite. I honestly can't remember seeing a piece quite like this from Tiger as it's such a RICH specimen with a lot of Azurite and Malachite for the locality. Priced at $850 in our inventory. Ex Kay Robertson Collection (#29). Kay was a prominent California collector, who specialized in European classics. She nearly lived 100 years from April 1920 - March 2020. See the article in the March-April, 2007 Mineralogical Record ( https://www.mineralogicalrecord.com/pdfs/Kay%20Robertson%20Collection.pdf ), and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017.