Question

    Which element is a primary constituent of orthoclase

    feldspar?
    A Calcium Correct Answer Incorrect Answer
    B Potassium Correct Answer Incorrect Answer
    C Iron Correct Answer Incorrect Answer
    D Magnesium Correct Answer Incorrect Answer
    E Sodium Correct Answer Incorrect Answer

    Solution

    Orthoclase (KalSi ₃ O ₈ ) is a potassium-rich feldspar. Plagioclase contains sodium or calcium.

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