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Granitoid Petrology

Classification of Granitoid Rocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quartz-rich. Granitoid. 90. 90. 60. 60. 20. 20. Alkali Fs.. Quartz Syenite. Quartz. Syenite. Quartz. Monzonite. Quartz. Monzodiorite. Syenite. Monzon

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Granitoid Petrology

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    1. Granitoids = loosely applied to a wide range of felsic plutonic rocks that contain feldspar quartz. Use QAP diagram to give specific names. Granite = strictly defined as a granitoid with roughly equal proportions of quartz, K-feldspar, and plagioclase. Granitoid Petrology

    2. Classification of Granitoid Rocks

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