This is a fabulous photographic guide to the world of rocks and minerals, as well as how to build your own collection. Expertly written text describes the impact of factors such as time, weather and water erosion on the development of these substances, and the part played by natural phenomena such as volcanoes and earthquakes. Specimens are grouped according to their chemical composition and characteristics, and all entries include quick-reference identification checklists to aid recognition. Featuring over 800 images, this book is a one-stop illustrated encyclopedia and field guide on an endlessly fascinating and richly consuming subject.