Sakshi posted an Question
September 16, 2021 • 13:41 pm 30 points
  • IIT JAM
  • Geology (GG)

69. alkali feldspar syenite is essentially composed of: (1) both alkali and plagioclase feldspars (2) minerals need microscope to see. (3) only alkali feldspar

69. Alkali feldspar syenite is essentially composed of: (1) Both alkali and plagioclase feldspars (2) Minerals need microscope to see. (3) Only alkali feldspar Plagioclase feldspar and biotite (4)

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    Saurabh 1 best-answer

    Consists primarily of alkali feldspar and minimal amount of plagioclase(contributes less than 10% ). So correct option should be (1) .

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