Learn to Identify Lake Superior's Rocks & Minerals, Full-color photos and the information you need for identifying and collecting, Incredible, sharp, full-color photos: the authors took their own photographs to depict the detail needed for identification, Comprehensive entries: photos of over 100 rocks and minerals means you're more likely to know what you've found, Quick identification guide: use this handy feature to determine a rock's identity, based on color and characteristic traits, Easy-to-use format: find out what you need to know and where to look, This second edition includes updated photographs, expanded information, and even more of the authors' professional insights! This area indicates the Lake Superior region addressed in this book, but rock hounds will find the guide useful throughout Minnesota, Michigan, Wisconsin, and Ontario. Book jacket.