GEOLOGY LAAB EXPERIMENT ANSWERS FOR IGNEOS ROCKS

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Answers for Igneous Rocks Lab Figure 2. Data table for observation of igneous rocks. Sample # Texture(s) (Phaneritic, Pyroclastic, Vesicular, Glassy, or Aphanitic) Composition (Felsic, Inter ... mediate, Mafic, or Ultramafic) Name of Rock Plutonic/Intrusive or Volcanic/Extrusive 1 Glassy Felsic Obsidian Volcanic/Extrusive 2 Phaneritic Felsic Granite Plutonic/Intrusive 3 Phaneritic Mafic Gabbro Plutonic/Intrusive 4 Pyroclastic Felsic Tuff Volcanic/Extrusive 5 Aphanitic Intermediate Andesite Volcanic/Extrusive 6 Aphanitic Mafic Basalt Volcanic/Extrusive 7 Phaneritic Ultramafic Peridotite Plutonic/Intrusive 8 Vesicular Felsic Pumice Volcanic/Extrusive 9 Aphanitic Felsic Rhyolite Volcanic/Extrusive 10 Vesicular Mafic Scoria Volcanic/Extrusive 11 Phaneritic Intermediate Diorite Plutonic/Intrusive 1. Sample #1 has a texture that is best described as ___________________. D. Glassy 2. Sample #1 has a composition that is best described as _________________________. A. Felsic 3. Sample #1 is named _______________________________. H. Obsidian [Show More]

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