Rock Encyclopedia

Explore how rocks form and how to identify them. Open specimen names for full entries; hover, focus or tap dotted-underlined words for a simple meaning.

Did You Know?

The world's largest amethyst geode — the 'Empress of Uruguay' — stands 3.27 metres tall and weighs 2.5 tonnes.

Survival Tip

Do not put tree sap, leaves or wild plant juice on a cut. They can irritate skin or introduce germs; use proper first-aid supplies.

Children: learn with a trusted adult and stay together outdoors. These tips support learning, not hands-on training or emergency help. In danger, contact local emergency services.

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“Find It. Know It. Collect Memories.”

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