"To discover the geologic novelties of the Centennial State, all that is required is a good map, a sense of adventure, and Colorado Rocks, a guide to 50 of the

Your Must-Have Guide to Colorado's Rocks and Minerals Get the perfect guide to rocks and minerals in the Centennial State This book by Dan R. Lynch and Bob Lync

Your 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 vas