Locality: Ouray District, Ouray County, Colorado, USA
Size: 65 mm x 63 mm 46 mm (2.5 in. x 2.4 in. x 1.8 in.)
Weight: 108 g (3.8 oz.)
Clear to translucent prismatic quartz crystals to 11 mm with pseudomorphic casts of quartz after an unknown mineral. The quartz formed over another mineral that later dissolved, leaving voids in the shape of the dissolved mineral.
Ex. D. Miller collection #M133.