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Biotite Granite with Quartz (33%), Alkali feldspar (47%), Plagioclase (10%), and Biotite (10%). Texture: phaneritic Quartz: cloudy white color with a greasy luster; irregular shape Alkali feldspar: pink with distinct crystal shape and cleavage. Grainsize ~1 cm Plagioclase: white Biotite: black, platy. |
University of Louisiana at Lafayette P.O. Box 44530, Lafayette LA 70504-4530 · Phone: 337-482-6468 · E-Mail: geology@louisiana.edu Document last revised: Saturday, 27-Nov-2004 12:16:18 CST |