Sphalerite (old and hard to find specimen) (ex Kay Robertson Collection)

Item Description

The Berzelius Mine is an old Copper producer that closed back in 1924, so this piece most likely over 100 years old. It features a group of fine quality, very sharp, lustrous, gemmy, golden-honey colored Sphalerite crystals measuring up to 5 mm across sitting on massive opaque Sphalerite matrix. A great old time specimen with beautiful crystals! If you collect sulfides, historic specimens or worldwide Sphalerites, don't miss out on this attractive piece from a classic locality. Ex Kay Robertson Collection (#4780). 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).