| 1. | Nephelinite is an example of a silica-undersaturated igneous rock.
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| 2. | Nephelinite is exposed on the islands but is extremely rare.
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| 3. | Benmoreite, nephelinites, pantellerites and kulaite are found here.
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| 4. | These include nephelinite, basanite and peralkaline phonolite, trachyte and comendite lavas.
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| 5. | Olivine nephelinite has been collected near these basalts.
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| 6. | A normative feldspathoid classifies a rock as silica-undersaturated; an example is nephelinite.
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| 7. | Nephelinite is yet richer in Na 2 O plus K 2 O compared to SiO 2.
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| 8. | The origin of the volcanism is unknown, but is probably related to olivine nephelinite occurs.
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| 9. | An example is the Hamada nephelinite lava flow in southwest Japan which occurred in the late Miocene age.
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| 10. | Nephelinite is also associated with the highly alkalic volcanism of the Ol Doinyo Lengai volcanic field in Tanzania.
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