Agates of Lake Superior: Stunning Varieties and How They Are Formed

ISBN-13: 9781591933724 / Angielski / Miękka / 2012 / 223 str.

Andrew J. Ries

Opis

The definitive book on Lake Superior's agates is here. If you're a casual rock collector, you will find Agates of Lake Superior fun, interesting and beautiful. If you're a more advanced hobbyist, you will appreciate this professional and scientific resource. The book provides a thorough examination of Lake Superior's strange and unique agate varieties, as well as a critical look at agate formation theories, tips on how to find and identify agates, where to look for them and how collectible your agates may be.