1.

Which of the following pairs of minerals dominate the continental crust

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ANSWER:

The most abundant minerals in the CRUST. More than 90% on the crust is composed of silicate minerals. Most abundant silicates are feldspars (plagioclase (39%) and alkali feldspar (12%)). Other COMMON silicate minerals are quartz (12%) pyroxenes (11%), amphiboles (5%), MICAS (5%), and CLAY minerals (5%).



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