| 11. | Units within the complex include carbonatite, nepheline syenite, phonolite, and ijolite.
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| 12. | In Phalaborwa, South Africa it occurs as replacement of magnetite in a carbonatite.
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| 13. | A carbonatite mine is located near the town.
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| 14. | In a 1962 paper, Pecora concentrated on the carbonatite deposits in the Bearpaw Mountains.
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| 15. | The intrusive members are syenite and carbonatite.
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| 16. | The lava must have had a very low viscosity, possibly due to a carbonatite composition.
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| 17. | Carbonatite melts are often considered to have been responsible for enrichment of mantle peridotite in incompatible elements.
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| 18. | The fenite zone is up to 1 km wide with a breccia zone adjacent to the carbonatite.
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| 19. | A specific type of hydrothermal alteration termed " fenitization " is typically associated with carbonatite intrusions.
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| 20. | Rare earths are contained in secondary aluminophosphates, presumably derived from weathering of the Proterozoic Mount Weld carbonatite.
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