Uploaded May 2025 | Updated September 2026, 11 hours ago
The Lake Superior Agate is the official state gemstone adopted in 1969 and is beloved and sought after by many. Craig Prudhomme is a retired naturalist and college instructor with a long-time interest in teaching how to Read the Landscape. In this webinar we will explore the fascinating geologic stories that lead to the formation of the agates that make Minnesota and the area southwest of Lake Superior such a hot-spot for collecting. We will look at how agates are formed, some different types, places to explore, special agate events, and what to do with them when you find them.
The Lake Superior Agate is the official state gemstone adopted in 1969 and is beloved and sought after by many. Craig Prudhomme is a retired naturalist and college instructor with a long-time interest in teaching how to Read the Landscape. In this webinar we will explore the fascinating geologic stories that lead to the formation of the agates that make Minnesota and the area southwest of Lake Superior such a hot-spot for collecting. We will look at how agates are formed, some different types, places to explore, special agate events, and what to do with them when you find them.
