| Understanding the material an artifact is made of is crucial to fully understanding the artifact. This book will help. First copyrighted in 1912, Dana's manual is a standard reference for identifying rocks. Doesn't matter if they are diamonds or arrowheads. It uses simple, condensed explanations in logical order, and is full of convenient, brilliantly conceived charts for speedy reference. I was introduced to this great book by a professional geologist. They may be purchased at Amazon for under 5$. Mine is an 18th printing, hardcover and in good shape. It sold for 1.98$! We can't always be certain our identification of lithic material is correct, but a reference work such as this can really help. |