1. Macroscopic aspects of nepheline syenite are similar to those of granite. 2. The plutonic leucite-bearing rocks are leucite syenite and missourite. 3. The fenised sandstones and syenite -fenite form aureoles around carbonatites. 4. The autoliths consist of nepheline syenite , micromelteigite, and carbonatite. 5. Fresh clear microcline is very characteristic of some types of nepheline syenite . 6. Herald Island is composed of sedimentary, cataclastic quartz syenite . 7. The Manitou Islands contain the uncommon rock types of fenite and syenite . 8. The mineral occurs in nepheline syenite pegmatites and granite and aplite greisens. 9. There is likely to be a giant laccolith of syenite below Cygnet. 10. Less quartz content would lead to " quartz alkali feldspar syenite ".
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