Hemimorphite & Smithsonite (RARE Swiss combo) Robertson Coll.

Tieftobel, Landwasser Valley, Grischun, Switzerland
Miniature, 3.9 x 2.7 x 1.8 cm
Start Time: 08/09/2018 6:30:00 pm (CDT)
End Time: 08/16/2018 6:32:58 pm (CDT)
Auction Closed

Item Description

A VERY RARE combination from this ancient small Swiss Pb-Zn-Cu deposit, that was first worked in the 15th and 16th centuries (MINDAT). The mineralization was re-discovered during road construction works in 1978. Hemimorphite is known from here, but smithsonite is EXTREMELY RARE. Sprays of tiny colorless hemimorphites are scattered on the matrix and a couple of vivid pink cobaltoan smithsonite crystals, to 2 mm, along with scattered crusts are visible. Ex Kay Robertson Collection # 9738 and acquired in October, 1982. 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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