Updated and expanded, this classic best-seller for Utah rock, mineral and fossil collectors is filled with expert advice gleaned from years of experience. Detailed text and maps lead the gem and fossil hunter to abandoned mine dumps, desert terrain, deep canyons, pristine mountains and beautiful lakes in the search for specimens. Black and white photos highlight the collecting areas. A color photo section aids in specimen identification, and a Mineral Locator Index helps to plan a successful collecting trip.