Psilomelane (old Arizona) Kay Robertson Coll.

near Duncan, Greenlee Co., Arizona
Small Cabinet, 8.8 x 4.7 x 3.3 cm
Start Time: 03/05/2020 6:30:00 pm (CST)
End Time: 03/12/2020 6:30:00 pm (CDT)
Auction Closed
Winning Bid: $32
View Closed Auction Set

Item Description

Psilomelane is an obsolete name for hard Manganese Oxides. This scuptural vesciular solid two-sided mass of matte dark manganese oxides consists of ropy masses of botryoids. Ex Kay Robertson Collection # 1836 and acquired from Burminco in the late 1950s or early 1960s. Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). Rare old-time botryoidal psilomelane from near Duncan, Arizona

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Bidding History

Bid Amount Bid Time
$32 03/09/2020 7:32:09 am (CDT)
$27 03/09/2020 7:32:07 am (CDT)
$10 03/07/2020 10:57:11 am (CST)