Nepheline syenite (foyaite)

Dark nepheline in a matrix of light-colored elongated alkali feldspars. Width of sample 16 cm.

Size: 3900px × 2600px
Location: Lardal, Norway
Photo credit: © Siim Sepp / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: alkali, alkaline, feldspar, feldspathoid, foid, foyaite, geology, igneous, lardalite, nepheline, nephelinite, peralkaline, rare, rock, silica, stone, syenite, undersaturated