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facts about gneiss rock

gneiss | FactMonster gneiss nīs, coarse-grained, imperfectly foliated, or layered, metamorphic rock . Gneiss is characterized by alternating light and dark bands differing in mineral composition and having coarser grains than those of . METAMORPHIC ROCKS - msnucleus types of rocks can change into another type of rock. Although metamorphic rocks are forming today, it is difficult to see. Increasing temperature and pressure occurs ... Granite can be metamorphosed into a rock called gneiss (pronounced like "nice"). Gneiss has about the same mineral composition as granite, but the pressure of Metamorphic Rocks - West ia University Gneiss - a coarse grained granular rock in which foliation results from alternating layers of light and dark minerals. Compositionally similar to granite with quartz, feldspar, biotite, and amphibole.    Read More

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