Monday, November 9th, 2026 at 7:00 PM Mary Queen of Saints Catholic Academy 1212 S 117th St, West Allis, WI. Adjacent to 'Mother of Perpetual Help, West' ChurchEnter down the stairs, at the back of building on 117th St All VISITORS ARE WELCOME! Our guest speaker for November is Kassie Cvikel. "Kasserena (Kassie) Cvikel's research focuses on the sedimentary fill of the Mesoproterozoic (1.1 Ga) Midcontinent Rift System (MCR) in Michigan's Upper Peninsula. Specifically, she is

Add to your calendar! Saturday May 16th and Sunday May 17th, 2026 10am-430pm Admission $5 (Children 12 and under free) (Cash Only) Waukesha Expo Center Forum Building 1000 Northview Rd Waukesha, WI

Join us for the Wisconsin Geological Society Rock & Gem Show coming up SOON!

Fun and good food for all at our annual Christmas Party held on Monday, December 11th (in lieu of our monthly meeting). In addition, we...

Pierre and Kayla from the Wisconsin Geological Society hosted a geological themed birthday party on Saturday, September 23rd featuring a...

WGS Members were invited by Bill Schoenfuss to dig for Moonstone in Marathon County at a private location. It was a farmers field and...

A story of Fire, Water, and Ice. Saturday, August 26th at the Point Beach State Forest Nature Center.

Let's go back in time to approximately 1.8 billion years. Mountains towering over the future Wisconsin landscape and volcanoes spewing...

WGS received a special behind-the-scenes tour of the Field Museum of Chicago's meteorite collection, fluorescent minerals, and we...

Wire Wrapping at Brown Deer Library On Saturday, March 25, 2023, WGS members Denise Hohenfeldt, Mary Shellman and Sue Eyre held a...

WGS will have a table with Wisconsin Rocks and Minerals. Come check us out and check out the Greene Gallery.

May 20th & May 21st 2023 Rocks, Minerals, Crystals, Fossils, Kids Activities & Food Indoors at Muellner Building: Hart Park, Wauwatosa,...

Rib Mountain State Park, the Quarry, Mosinee Hill, and Hardwood Hill are made from quartzite that was once sandstone. The sandstone,...

Saturday & Sunday May 14 and May 15, 2022 (The weekend after Mother’s Day) 10am to 4:30pm each day Admission $3 or 2 for $5 Accompanied...

What is Calcite? Calcite (CaCO3) is a very common and widespread mineral with many forms and colors. The properties that identify calcite...