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      Question

      Which mineral is most abundant in the EarthтАЩs

      crust?
      A Feldspar Correct Answer Incorrect Answer
      B Quartz Correct Answer Incorrect Answer
      C Pyroxene Correct Answer Incorrect Answer
      D Amphibole Correct Answer Incorrect Answer

      Solution

      Plagioclase feldspar constitutes 39% of the EarthтАЩs crust, followed by quartz (12%) and other minerals.

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