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Discussion :: Lithosphere

  1. Igneous rocks are formed from molten rock material. Which one of the following is not an igneous rock?

  2. A.

     Granite

    B.

     Quartz

    C.

     Feldspar

    D.

     Slate

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    Answer : Option D

    Explanation :

    Slate is not an igneous rock. Slate is a metamorphic rock created by the compression of shale or mudstone under relatively low temperatures and pressures caused by the building up of sedimentary layers above it.


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