Michigan's Copper Country Rocks & Minerals: Easily Identify 38 Collectible Finds, Including Copper and Agates

Jim Magnuson has been an avid hunter of various gems, minerals, and fossils since childhood. Because of his in-depth knowledge, he is frequently called upon to present to groups such as rock and mineral clubs, geological societies, and educational institutions that focus on outdoor and environmental interests. He likes to perform various lapidary arts with the stones that he finds, and he has a small business making and selling custom-polished stones and jewelry pieces.