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Igneous rock - Wikipedia
Igneous rock | Characteristics, Examples, Formation, & Types
Igneous Rocks - National Geographic Society
Igneous Rocks – Types, Properties, and Examples - Science Notes …
What are igneous rocks? | U.S. Geological Survey - USGS.gov
Igneous Rocks | Types, Classification, Properties, Formation
3.6: Igneous Rocks - Geosciences LibreTexts
4.1: Classification of Igneous Rocks - Geosciences LibreTexts
4.1: Igneous Rocks - Geosciences LibreTexts
Types of Rocks – Igneous, Sedimentary, Metamorphic