This book is only good for getting the names of places to go rockhounding at. Once you get the place names, then you'll have to look elsewhere to get any other useful information. At first I thought this book would end up being a big help, but when it came down to planning trips and actually going to these places I found that this book is just a bunch of, well, lies. About a fifth of the maps are okay. Better than half of the maps are inaccurate to the point of being useless. There are a couple maps (which I found, at least) that appear to be completely fictitious. The entire value of this book lies in its index of mineral types and location names. Not even close to being worth the price.