What's That Rock or Mineral? is an indispensable beginner's guide to identifying the 150 most common North American rocks and minerals.

The perfect pocket guide to identifying rocks for beginners RSPB What's That Rock? is ideal if you struggle with how to tell the difference between granite and

An essential reference for rockhounds, hikers, climbers, and geology enthusiasts Rocks, Minerals, and Geology of the Pacific Northwest highlights 100 rocks, min

Although rocks may initially seem like solid, unchanging substances, they are actually made up of minerals that change forms and get recycled through many diffe