| 11. | It is a secondary mineral formed by the weathering and hydration of other minerals.
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| 12. | Both are relatively rare secondary minerals found in oxidation zones of As-rich ore deposits.
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| 13. | Chlorargyrite occurs as a secondary mineral phase in the oxidation of silver mineral deposits.
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| 14. | It is a rare secondary mineral occurring in the oxidized zones of lead-rich deposits.
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| 15. | It is a secondary mineral that forms from the alteration of other secondary minerals.
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| 16. | It is a secondary mineral that forms from the alteration of other secondary minerals.
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| 17. | Campigliaite is a rare secondary mineral formed when metallic sulfide skarn deposits are oxidized.
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| 18. | Members of the triphylite-lithiophilite series readily alter to secondary minerals.
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| 19. | Sepiolite occurs as a secondary mineral associated with serpentine.
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| 20. | Dundasite is an uncommon secondary mineral occurring in the oxidized zone of lead ore deposits.
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