Browse Items (3 total)

  • Title is exactly "Nepheline syenite "

Gray, less mafic than average
Representative of main rock type in quarry

PH-4.
Nepheline Syenite. Thin, dark vein runs through the center body of the rock.

PH-3.
Nepheline syenite that outcrops on west side of trail at about 9200 ft. on east side line of section.
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