Lab -Igneous Rocks identification Worksheet- soloman eldho

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University of North Texas *

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Geology

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Dec 6, 2023

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Name: Soloman Eldho Igneous Rocks Virtual Lab http://profharwood.x10host.com/GEOL101/Labs/Igneous/index.htm Please visit the preceding website, review igneous rock information provided there, and identify the 12 unknown rock samples displayed on that site. For each rock provide the following 3 characteristics. (Lab materials credit to, and used with permission from, Professor Richard Harwood) Rock Name Texture Composition 1. Basalt Porphyritic Mafic 2. Diorite Phaneritic Intermediate 3. Dunite Phaneritic Ultramafic 4. Gabbro pegmatite Phaneritic Mafic 5. Granite Phaneritic Felsic 6. Granite Pegmatite Phaneritic Felsic 7. Obsidian Glassy Felsic 8. Pumice Vesicular Felsic 9. Rhyolite Porphyritic Felsic 10. Scoria Vesicular Mafic 11. Andesite Porphyritic Intermediate 12. Volcanic Tuf Pyroclastic Felsic

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Lab -Igneous Rocks identification Worksheet- soloman eldho

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