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Igneous rocks are classified by Origin, Mineral Composition, and _______.

Question # 1b. Igneous rocks are classified by Origin, Mineral Composition, and _______. Hardness Texture Luster. Question #1. Igneous rocks are classified in what three ways?. Question #2. Igneous rock that forms IN the earth is ________. Igneous rock that forms when molten

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Igneous rocks are classified by Origin, Mineral Composition, and _______.

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  1. Question #1b Igneous rocks are classified by Origin, Mineral Composition, and _______. Hardness Texture Luster

  2. Question #1 Igneous rocks are classified in what three ways?

  3. Question #2 Igneous rock that forms INthe earth is ________. Igneous rock that forms when molten rock EXITSthe earth and then cools is ________.

  4. Question #3 A rock that has both large and small grains is called ________ . Porous Coarse-grained Porphyritic

  5. Question #4 The oceanic crust is made mainly from Basalt, which is cooled lava. Is Basalt intrusive or extrusive?

  6. Question #5 Which rock likely has the LEAST silica?

  7. Question #4b The continental crust is made mainly From Granite, which is cooled magma. Is Granite intrusive or extrusive?

  8. Answer Key • Question 1: Origin, Texture, Mineral Composition • Question 1b: Texture • Question 2: Intrusive, Extrusive • Question 3: Porphyritic • Question 4: Extrusive • Question 4b: Intrusive • Question 5: B

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