Stephen M. Voynick
Colorado Rockhounding, is a complete guide to the state's rich and varied mineral, gemstone, and fossil sources. In Colorado, rockhounds may pick agate and petrified wood from the vast Great Plains, follow dinosaur tracks on hogback ridges, pan gold in mountain streams, hunt gemstones on towering peaks, and search for metal sulfide minerals in historic mining districts.
Science,Geology
Colorado Rockhounding