Editing Gneiss (section)

===Augen gneiss===
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{{See also|Augen}}
[[File:Augen-gneiss.jpg|thumb|Augen gneiss from {{Lang|pt|[[Leblon]]|italic=no}}, Rio de Janeiro City, Brazil]]
[[File:Orthogneiss oeillé - Ras Prat Cabrera (Canigou).jpg|thumb|Ordovician augen gneiss outcrop, [[Canigó]] massif, eastern Pyrenees, France]]
'''Augen gneiss''', from the {{langx|de|Augen}} {{IPA|de|ˈaʊɡən|}}, meaning "eyes", is a gneiss resulting from metamorphism of granite, which contains characteristic elliptic or [[Lens (geology)|lenticular]] shear-bound grains ([[porphyroclast]]s), normally [[feldspar]], surrounded by finer grained material. The finer grained material deforms around the more resistant feldspar grains to produce this texture.{{sfn|Blatt|Tracy|1996|pp=358-359}}