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Gneiss is brittle. Actually, very few rocks are ductile by definition. Most rocks are not maleable unless under extreem heat.

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βˆ™ 13y ago
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βˆ™ 4mo ago

Gneiss is a metamorphic rock that typically displays ductile behavior due to its layered composition and high temperature and pressure conditions during formation. This means that it is more likely to be deformed without breaking easily compared to brittle rocks like quartzite.

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Q: Is gneiss ductile or brittle
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