Prehnite

Item Description

A very seldom seen specimen of Prehnite from the Köhlerloch Quarry in the Goslar District of Lower Saxony, Germany. The piece hosts dozens of "clamshell"-shaped, rather lustrous, soft greenish-yellow colored groups of Prehnite measuring up to 6 mm on matrix. The bright reflective luster is quite impressive, as the piece sparkles in the light. I can't find any damage, outside of the periphery where the piece was removed from the pocket wall. These are incredibly rare on the market (mindat.org doesn't actually list Prehnite as occurring at this quarry), so if you're a fan of worldwide Prehnites, this is a nice locality specimen to add to your collection.
From the collection of Kurt Hefendehl (#67 D), a well-known German collector all over Europe with worldwide contacts to dealers and collectors. He started collecting seriously at the age of 14 and his great and varied worldwide collection reached over 6000 pieces. He was very active mineralogically until shortly before his passing in 2020 at the age of 82. Considering his collection had a large number of pieces, it still had an unusually high standard of quality from most worldwide localities. He particularly specialized in all classics as well as minerals of the Black Forest, where he spent much time collecting. His Black Forest and German subcollections went to his good friend Wolfgang Wendel. We at The Arkenstone have the privilege of offering the remainder of this great worldwide collection for the foreseeable future through our various platforms.