Your Must-Have Guide to the Rocks and Minerals of Wisconsin, Illinois and Iowa Get the perfect guide to rocks and minerals in the Heartland This book by Dan R.

From the spiky teeth of a geode containing sparkling quartz crystals, the rich browns and golds of smoky quartz and goethite needles on calcite, and the coral-l

Author Scott Spoolman has picked 52 of the best geologic sites in the state to include in Wisconsin Rocks!, a new title in the state-by-state Geology Rocks! ser

Copious illustrations and witty, page-turning prose guide readers on geologic walking or driving tours of 37 sites in Illinois.