This mine has produced some of the best casts after Anhydrite that I've seen from the United States. It is covered with dozens of small pale pink, "rosettes" of Rhodochrosite sitting on white casts of Quartz after Anhydrite with Pyrite crystals. This mine is long defunct and these specimens will no longer be seen except from old collections. A great cabinet-sized specimen of this hard to find and very unique material. Specimens of this size and quality from the Sunnyside are now nearly impossible to find on the market, and will never be mined again. Ex. Richard Kosnar Collection.