| 41. | Litchfieldite is another well-marked type of nepheline-syenite, in which albite is the dominant feldspar.
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| 42. | The industrial use of nepheline syenite includes refractories, glass making, ceramics and, in pigments and fillers.
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| 43. | Syenite, some containing the unusual mineral nosean, makes up a few percent of the igneous rocks present.
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| 44. | In the north, greywacke prevails but, in the west, by contrast the main rock is syenite.
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| 45. | Cancrinite syenite, with a large percentage of cancrinite, has been described from Dalekarlia, Sweden and from Finland.
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| 46. | Cappelenite, which he discovered in small veins within Nepheline syenite pegmatite, is a rare yttrium-barium borosilicate.
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| 47. | Intrusive igneous rock originates from adjacent slopes ( most of those being tan-colored feldspar-rich syenite ).
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| 48. | In the western portion of the field the buttes consist of the feeder diatremes of monchiquite and nepheline syenite magmas.
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| 49. | On the southern part of the island there is a large Nepheline syenite mine at " Lillebukt ".
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| 50. | The exterior stone of the building on Broad and Filbert Streets is Cape Ann Syenite from Syne in Upper Egypt.
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