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Editorial review
Perfect for mountain climbers and hikers this valuable reference 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. Author: National Audubon Society.