National Audubon Society Field Guide to Rocks and Minerals is a valuable reference that covers more rocks and minerals in North America than any other available guide. 794 full-color photographs depict all the important rocks, gems, and minerals — in many variations of color and crystal form — and the natural environments in which they occur; written descriptions provide information on field marks, similar rocks and minerals, environment, areas of occurrence, and derivation of names. Includes a guide to mineral collecting and a list of rock-forming minerals. Additional identification keys are included, based on hardness, cleavage, streak, environment and other characteristics.
Sotcover; 850 pages; 3 3/4 x 7 1/2
full-color photographs, maps