Witherite (fluorescent) w/ Calcite (Kay Robertson Coll.)
- Minerva No. 1 Mine, Cave-in-Rock, Hardin Co., Illinois
- 9.5 x 6.0 x 4.5 cm
- Start Time: 01/09/2020 6:30:00 pm (CST)
- End Time: 01/16/2020 6:55:00 pm (CST)
- Auction Closed
- Winning Bidder: gorski
Three intergrown pseudo-hexagonal twinned witherite crystals form an impressive and sculptural large specimen from this well-known Illinois locale. The frosted classic stepped-growth faces cover most of the very glassy, translucent underlying tan calcite. The dimple at the crest of the large witherite makes it look like a volcano, adding pizzazz. Excellent white fluorescence. Ex Kay Robertson Collection # 8443 and acquired from Ron Sohn at the Tucson Show in 1978. 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). A very fine large Minerva Mine witherite with multiple display views.