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Hornfels

Pictures of Metamorphic Rock Types

Hornfels is a tough, fine-grained rock that is made by contact metamorphism where magma bakes surrounding rocks. Note how it breaks across the original bedding.

Photo courtesy Fed on Wikimedia Commons

For more photos see the Metamorphic Rocks Gallery.

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About Metamorphic Rocks Contact Metamorphism Porphyroblast Gallery

Collecting Metamorphic Rocks

About Rocks & Rock Collecting Where to Look for Rocks and Minerals Mineral Collecting at Contact Zones

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