Handout
Australian Museum

Australian Museum: Concretions, Thunder Eggs and Geodes

For Students 9th - 10th
Ever break open a geode and see the beauty inside? Learn how those crystals formed, as well as the mineral formations in thunder eggs and concretions.
Handout
Curated OER

National Park Service: Agate Fossil Beds: Geologic Formations

For Students 9th - 10th
This National Park Service site has information about these fossil beds in Nebraska and where the name Agate came from.

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