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Metamorphic rock: Quiz

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Question 1: In a few cases rocks are fused and in the dark glassy product minute crystals of ________, sillimanite and cordierite may separate out.
ChromiteCorundumRubySpinel

Question 2: They are also formed when rock is heated up by the intrusion of hot molten rock called ________ from the Earth's [[interior (topology)|].
GraniteBasaltIgneous rockMagma

Question 3: Metamorphic rocks make up a large part of the ________'s crust and are classified by texture and by chemical and mineral assemblage (metamorphic facies).
NatureEarthMoonSun

Question 4: The protolith may be sedimentary rock, ________ or another older metamorphic rock.
GraniteBasaltFelsicIgneous rock

Question 5: The formation of important ________ minerals may occur by the process of metasomatism at or near the contact zone.
Ore genesisHeavy mineral sands ore depositsOreSedimentary exhalative deposits

Question 6: The layering within metamorphic rocks is called foliation (derived from the ________ word folia, meaning "leaves"), and it occurs when a rock is being shortened along one axis during recrystallization.
Roman EmpireOld LatinLatinVulgar Latin

Question 7: For example, ________ is a foliated metamorphic rock, originating from shale.
SchistSlate industrySedimentary rockSlate

Question 8: These minerals, known as index minerals, include sillimanite, kyanite, staurolite, andalusite, and some ________.
GarnetQuartzDiamondTourmaline

Question 9: Other minerals, such as olivines, pyroxenes, amphiboles, micas, ________, and quartz, may be found in metamorphic rocks, but are not necessarily the result of the process of metamorphism.
AnorthiteFeldsparOrthoclasePlagioclase

Question 10: Metamorphic rock is the result of the transformation of an existing rock type, the protolith, in a process called ________, which means "change in form".
GranuliteMetamorphic faciesAmphiboliteMetamorphism







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