Wisconsin Geological Society

Red granite became the state rock in
              1971. Granite is an igneous rock made up of a variety of
              minerals -- typically quartz, feldspar, mica, and
              hornblende. Granite is commonly used as a building and
              decorative stone.

It's almost here!
Please join us for the 61st annual
Gem, Mineral, and fossil Show
Saturday May 19th and Sunday May 20th

Map to the show

Click here for a printable version of our 2018 show flyer

Wisconsin State Mineral
Adopted: March 9, 1971 The Kenosha Gem and Mineral Society, to promote geological awareness, introduced the proposal for Wisconsin to adopt a mineral. Galena was chosen because of its immense role in Wisconsin's history and economy. After all Galena (lead) was what first attracted European settlers to Wisconsin.