AUDBN FG: ROCKS/MINERALS</br></br>Product Description</br></br>Perfect for mountain climbers and hikers?? this valuable reference covers more rocks and minerals in North America than any other available guide. 794 full-color photographs depict all the important rocks?? gems?? and minerals -- in many variations of color and crystal form -- and the natural environments in which they occur; written descriptions provide information on field marks?? similar rocks and minerals?? environment?? areas of occurrence?? and derivation of names. Includes a guide to mineral collecting and a list of rock-forming minerals</br><br/>http://www.amazon.com/gp/product/0394502698