Zunyite is a rare chlorinated silicate. This very rich, large and fine specimen is from the Type Locality - the Zuni Mine in the Silverton District of Colorado. Glassy, translucent, gray-tan, triangular crystals to 3 mm richly cover all sides of the nicely contrasting kaolinite-rich matrix. The collection this came out of was a museum stash dating to prior to World War I.