Primary minerals vs Secondary minerals
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Primary minerals
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Secondary minerals
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1. They are formed in the cooling and solidification of molten mass.
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1. They are formed by weathering of primary minerals.
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2. They are mostly concentrated in coarse fraction of soil.
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2. They are dominant in majority of soil clays.
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3. Physical and chemical properties of soil are not controlled by primary minerals.
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3. Physical and chemical properties of soil are controlled by secondary minerals.
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4. They are not capable of being synthesized.
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4. They are capable of being synthesized.
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5. Example: Quartz, feldspar, micas, amphiboles etc.
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5. Example: Limonite, calcite, dolomite etc.
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