and Bob Lynch features comprehensive entries for 115 Colorado rocks and minerals, from common rocks to rare finds. Learn from the fascinating information about everything from amazonite and rhodochrosite to smoky quartz and gold. The easy-to-use format means you’ll quickly find what you need to know and where to look. The authors’ incredible, sharp, full-color photographs depict the detail needed for identification?no need to guess from line drawings. With this field guide in hand, identifying and collecting is fun and informative.

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