Recrystallization occurs because thermal energy causes atoms to vibrate rapidly

Recrystallization occurs because thermal energy

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14. Recrystallization occurs because thermal energy causes atoms to vibrate rapidly, breakexisting chemical bonds, and migrate to new positions on the crystal lattice where theyare more stable under the hotter conditions True—this process doesn’t change the identity or chemical composition of themineral; it just produces larger crystals of the mineralFalse 15. Roofers use the rock schist to shingle roofs because its foliation, called schistosity, causesit to break in convenient size. 16. The mineral sillimanite indicates higher-grade metamorphism than staurolite. at higher metamorphic grade than staurolite. 17. Schist is a medium-grade foliated metamorphic rock that normally contains micas. True – many di뮎erent types of rocks are composed of atoms that can be metamorphosed into the mineral mica, which is a chief component of themetamorphic rock schist 18. Which is NOT a cause of banding in gneiss? —preferential orientation can impart foliation to a rock butcannot cause the compositional banding that de?nes a gneiss 19. Marble is a favourite material of sculptors because of its relative softness, and uniformtexture. like a slate or schist. Also imagine what it would be like trying to sculpt quartz orquartzite, which are harder than steal and would destroy tool 20.Blueschist is a common metamorphic rock of continental shields
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– blueschist is a rare, blue-coloured rock formed under high pressure, lowtemperature conditions that are found in accretionary prisms adjacent to subductionzones.21. If the intrusion of magma (a pluton) melts ma?c country rock, the resultingmetamorphic rock is a schist or gneiss.
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