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Rocks, Gems and Minerals : Revised and Updated (A Golden Guide from St. Martin's Press)
Rocks Gems and Minerals Revised and Updated - A Golden Guide from St. Martin's Press Author:Paul R. Shaffer, Herbert S. Zim This handy identification guide to the most common kinds of rocks and minerals offers concise and fascinating information on; — Physical and chemical properties — Origins and geologic significance — Gems and semiprecious stones — How to find and collect specimens — Illustrated in full color throughout, this is a gem of a guide for rockhounds and mine... more »ral collectors!« less