Gem Trails of Northern California;

In this up-dated edition detailed text and maps lead rockhounds to over 76 locations where 60 varieties of California's mineral and fossil treasures can be collected, and weekend prospectors can pan for gold. Full-color specimen photos inspire your collecting efforts and black and white photos help to locate sites as diverse as the minerals themselves. With a Mineral Locator Index and Glossary and helpful contact info, this is the most complete guide to gem, fossil and mineral collecting in Northern California.