KMGS - Welcome to the Kettle Moraine Geological Society's website. We are a group of rockhounds who enjoy finding and teaching others about Rocks, Minerals and Earth Sciences.

Trilobite

Trilobites are a fossil group of extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest known groups of arthropods. The fossils of trilobite are found in a limestone shale. The trilobite is Wisconsin’s state fossil.

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Galena

Galena, also called lead glance, is the natural mineral form of lead(II) sulfide. It is the most important ore of lead and an important source of silver. Galena is the official state mineral of Missouri and Wisconsin.

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Agate

Agate is a cryptocrystalline variety of silica characterised by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks.

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Fluorescent Calcite

Calcite is transparent to opaque and may occasionally show phosphorescence or fluorescence. A small amount of manganese is enough to make it glow bright red under some wave lengths of ultraviolet light.

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Amethyst

Amethyst is a violet variety of quartz often used in jewelry. Amethyst occurs in primary hues from a light pinkish violet to a deep purple. Amethyst may exhibit one or both secondary hues, red and blue. The best varieties of amethyst can be found in Siberia, Sri Lanka, Brazil and the far East.

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Welcome to the Kettle Moraine Geological Society

a non-profit organization dedicated to the knowledge of earth sciences

2019 Rock, Mineral, Gem & Earth Science Show

It’s coming faster than you think! Mark your calendars. We are expecting another fantastic show. Again, the 2019 57th annual Rock, Gem & Earth Science show will be held at the Washington County Fair Park & Convention Center at 3000 Hwy PV on March 9 & 10, 2019. Learn more below.

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Join Us

Are you interested in becoming a member? We meet the 3rd Wednesday of the month. Our location is the Pewaukee Library. 210 Main St. in Pewaukee, WI. Come check us out and see what KMGS is all about.

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