Postcards that highlight different minerals of Utah. The back of each has a description and identification of the mineral. Product of the Utah Geological Survey.
5. Azurite (blue) and Malachite (green)
7. Variscite (green) and Crandallite (yellow)
10. Topaz (amber) and Bixbyite (black)
Each postcard dimension is 4 inches x 6 inches.