4310LM2K_S10Mon

4310LM2K_S10Mon - GLY 4310 50 points Name Monday, April 5,...

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1 GLY 4310 Name 50 points Monday, April 5, 2010 LAB MIDTERM 2 KEY Closed Notes - 15 points True-False - Print the letter T or F in the blank to indicate if each of the following statements is true or false. Illegible answers are wrong. (1 point each) 1 F 1. The major felsic mineral in ijolite is quartz. 4 T 2. In rhyolite, the K-spars are often metastable high temperature forms such as sanidine or anorthoclase. 2 T 3. Aplite is a light colored hypabyssal rock. 2 T 4.Pyroxene is higher in Bowen's reaction series than hornblende. 7 F 5. Quartz is usually subhedral to euhedral in granite. Multiple-Choice - Choose the best response to each statement or question. Print the letter corresponding to your choice in the blank. (1 point each) 7 D 1.Which mineral is most likely to be found in dunite? A. Hematite B. Magnetite C. Pyrite D. Chromite 4 D 2. What variety of quartz is likely to be seen in rhyolite? A. Citrine B. Milky C. Rock crystal D. Smoky 2 C 3. The essential felsic mineral in gabbro is: A. Alkali feldspar B. Quartz C. Plagioclase D. Nepheline
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2 5 B 4. Which of the following minerals is not a clinopyroxene? A. Aegirine
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4310LM2K_S10Mon - GLY 4310 50 points Name Monday, April 5,...

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