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Name ___ Per. ________ Date Lab – Igneous Rocks Directions: Using the chart below and the class notes about igneous rocks, answer the following questions. Answers do not need to be in complete sentences. Mineral Composition (color) Dark Intermediate Light Coarse (large crystals) intrusive Gabbro Diorite Granite Basalt Andesite Rhyolite Obsidian Obsidian ----------------- Scoria Scoria Pumice Texture Fine (small crystals) extrusive Glassy (no crystals) extrusive Pyroclastic (air pockets) extrusive Rock # 1 A. What is the mineral composition of this rock? B. What is the texture of this rock? ____________________________ C. Is this rock intrusive or extrusive? D. What is the name of this rock? Rock # 2 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 3 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 4 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 5 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 6 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 7 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 8 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock? Rock # 9 A. What is the mineral composition of this rock? ______________________ B. What is the texture of this rock. C. Is this rock intrusive or extrusive?______________________ D. What is this rock?