The Richard M. Geiger Collection

ex. Philadelphia Academy of Natural Sciences, William S. Vaux Collection #21129. Steve Behling of the Collector's Edge writes: The Academy funded several expeditions to localities in South America and undoubtedly this piece was picked up on one of the expeditions in the 1920's. The specimen features pink, discoidal crystals of rhodochrosite to approximately 5mm across on a sulfide matrix. ----- Photo courtesy of/©2007 The Collector's Edge Minerals