Your Quick Guide to Identifying Rocks and Minerals Get the perfect guide to rocks and minerals in the Golden State! Keep this tabbed booklet close at hand on your next rock-hunting adventure. Based on Dan R. Lynch and Bob Lynch’s best-selling field guides and featuring 72 of the most common and desirable rocks and minerals in California, the booklet is organized by rocks/minerals and then by general appearance for quick and easy identification. Narrow your choices by appearance, and view just a few specimens at a time. The easy-to-use format means you’ll quickly find what you need to know. Plus, the quick guide is much easier to use than laminated foldouts, and the tear-resistant pages help to make the book durable in the field.