Gneiss Photos                
Cochise College
Photos of Rocks
Metamorphic Rocks
Geology Home Page
Roger Weller, geology instructor                       

wellerr@cochise.edu

 

Gneiss
last edited:  11/1/16    number of photos:  89
Gneiss is a coarse grained, highly metamorphosed,
foliated rock. 
The minerals found in gneiss are often the same ones                                           
found in granite. 
Gneiss can be distinguished from granite by the presence
of mineral layers or minerals aligned in one direction
(lineation) or in layers (foliation).

 

photos
gneiss:  A  B  C  D  E  
gneiss, augen gneiss:  A  B
gneiss, banded:  A  B  C  D
gneiss, banding (microscopic views):  1  2  3  4  5
gneiss, biotite:  A  B
gneiss, coarse:  A  B  C
gneiss, corundum:  A  B  C

gneiss, cut:  A  B
gneiss, fine-grained:  1  2  3  4  5  6
gneiss, folds:  1  2  3  4  5
gneiss from Arizona:  1  2  3  4  5
gneiss from California:  1  2  3  4  5
gneiss from Colorado:  1  2  3  4  5  6  7
gneiss, granitoid:  A  B
gneiss, hornblende:  A  B  C  D
gneiss, microscopic views:  1  2  3  4
gneiss, polished:  A  B  C                                                                                                                                                                                                      
gneiss, porphyritic:  A  B

gneiss, rounded cobble:  A  B  C
gneiss, sillimanite-garnet:  A  B
gneiss, syenite:  A  B

gneiss with garnets:  A  B  C
gneiss with garnets (microscopic views):  1  2  3  4  5
gneiss with iron oxide concretions:  1  2
gneiss with pegmatite:  A  B  C

gneiss showing lineation:  A  B  C

Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College. 
copyright 2016-R.Weller

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