| 11. | Over the existing crepido a new stylobate of syenite blocks was placed.
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| 12. | Inside the city proper are six syenite hills,.
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| 13. | Rock types include trachyandesite, trachyte, syenite and amphibole-biotite granite.
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| 14. | It is essentially a microcline, sodalite and cancrinite variety of nepheline syenite.
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| 15. | Nepheline syenite provides geological clues to environment of formation.
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| 16. | Connected with the borolanite there are other types of nepheline syenite and pegmatite.
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| 17. | Rocks from the Cretaceous include syenite porphyry sills and dykes near Cygnet around.
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| 18. | It was first described by mineralogist and geographer dike of nepheline syenite composition.
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| 19. | It is called nepheline syenite gneiss or litchfieldite.
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| 20. | On the other hand, nepheline syenite gneiss contains abundant and large zircon crystals.
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