Nepheline syenite (nepheline is gray)
Width of sample 9 cm.
Size: 3600px × 2400px
Location: Larvik, Norway
Photo credit: © Siim Sepp / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: alkaline, deficient, feldspar, feldspathoid, igneous, nepheline, rock, silica, syenite