Cassiterite (cyclic twins) (ex Kay Robertson Collection)

Item Description

This specimen is labeled as coming from the "Moona River" (presumably the Moona Moona River) in New South Wales, Australia. With that said, I can't find a listing in any database that mentions this river, so if anybody out there can give us a better idea of where this piece is from, please let us know. This toenail sized specimen features a handful of very sharp, lustrous, well-formed cyclic twins of Cassiterite measuring up to 1.0 cm across sitting on iron-stained Muscovite matrix. The Cassiterites may appear black at first glance, but with a bit of backlighting, you can see small bright reddish-orange highlights inside. The piece is in great shape, with no major damage on the display side. A great representation of this classic and fine quality material. Ex Kay Robertson Collection (#7056). 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.