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  1. Igneous rock - Wikipedia

  2. Igneous rock | Characteristics, Examples, Formation, & Types

  3. Igneous Rocks – Types, Properties, and Examples - Science Notes …

  4. What are igneous rocks? | U.S. Geological Survey - USGS.gov

  5. Igneous Rocks – Definition, Types, Examples, & Pictures - Science …

  6. Igneous Rocks - Geology (U.S. National Park Service)

  7. Igneous Rocks | Pictures of Intrusive and Extrusive Rock Types

  8. Igneous Rocks - Definition, Characteristics, Types, Examples & Uses

  9. Formation, composition, and classification of igneous rock

  10. Igneous Rocks - National Geographic Society