In this book two renowned experts share their lifelong passion for geodes and their extensive knowledge of world-class geode deposits as they present the latest theories on the formation and occurrence of these amazing mineral gifts of nature.
The most comprehensive book ever written on geodes of the Americas - a definitive reference for serious collectors and a delightful mineral exploration for both experts and novices.
Students say "Rocks Rock! With this Clever Catch. Test your students ability to recall important rock facts.This 24" inflatable ball makes learning about Rocks and their properties a bunch of fun! Play a quick game by tossing the ball back and forth between two students or a group, and wherever the students left thumb lands is the question that gets answered!! Teacher?s answers and instructions for game play are included on the enclosed answer sheet. Examples of the 96 questions:
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