Cummingtonite (rare Amphibole species) (ex Kay Robertson Collection)

Snarum, Norway
Small Cabinet, 6.6 x 4.6 x 4.1 cm
Start Time: 07/12/2018 6:45:00 pm (CDT)
End Time: 07/19/2018 6:45:00 pm (CDT)
Auction Closed
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Item Description

A lovely specimen of this rare amphibole featuring attractive, sharp, lustrous, silvery-green color fibrous crystals of Cummingtonite forming semi-radial "sprays". Cummingtonite is a dimorph of Anthophyllite and specimens are seldom seen on the market. Ex Kay Robertson Collection (#2174). 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).

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