Isometric System                    
Cochise College                                                                                        
Geology Home Page 
MINERALS and CRYSTALS
Crystals and Crystal Models    

Roger Weller, geology instructor 
 
wellerr@cochise.edu
last edited:  3/22/18    number of photos:  145



garnet- trapezohedron crystal

illustrations
Illustrations from Manual of Mineralogy and Petrology,
by James D. Dana, 1889:  1  2  3  4  5  6  7  8  9
also visit:
Textbook of Systematic Mineralogy
by Hilary Bauerman, 1881, 362 pages
    III.  Cubic System- page 37

wooden crystal models
model 01-octahedron:  1  2  3  4  5
model 02-cube:  1  2  3                                                                          
model 03-dodecahedron:  1  2  3  4  5
model 04-tetrahexahedron:  1  2  3  4  5
model 05-trisoctahedron:  1  2  3  4  5
model 06-trapezohedron:  1  2  3  4
model 07-hexoctahedron:  1  2  3  4  5
model 09:  1  2
model 11:  1
model 13. cube modified by octahedron:  1  2
model 15:  1
model 26-tetrahedron:  1  2  3
model 27-tristetrahedron:  1  2  3
model 28-trigonal tristetetrahedron:  1  2  3  4
model 29-hextetrahedron:  1  2  3
model 37, modified dodecahedron:  1  2
model 38-modified cube:  1
model 39-pyritohedron:  1  2
model 40:  1  2
model 42:  1
model 43:  1  2  3
 

molecular structure models
models of halite crystalline structure:  1  2  3  4
models of diamond crystalline structure:  1  2  3  4

 
crystals of minerals                     

cube
     fluorite:  1  2  3  4  5  6  7
     pyrite:  1  2
     galena:  1  2  3  4

     halite:  1  2
cube-modified
     pyrite:  1  2  3  4  5  6  7
   
limonite after pyrite:  1  2
octahedron
     cuprite:  1
     fluorite:  1  2  3  4
     franklinite:  1
     galena:  1  2
     limonite after pyrite:  1
     magnetite:  1  2

     pyrite:  1  2  3
     spinel:  1  2

octahedron-modified
     galena:  1  2  3  4  5  6                                                             

     pyrite:  1  2

dodecahedron
     garnet:  1  2  3  4

dodecahedron-modified
     garnet:  1  2  3

     lazurite:  1  2

trapezohedron
     garnet:  1  2  3  4  5  6 
     leucite:  1

pyritohedron
     pyrite:  1  2  3  4
     limonite after pyrite:  1

cube modified by pyritohedron
   
pyrite cubes with striations:  1  2  3
  
pyrite cube with pyritohedron faces:  1
tetrahedron

     pyrite:  1  2
     sphalerite:  1  2  3
tetrahedron-modified
     sphalerite:  1  2 
 

Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.
copyright 2018-R.Weller


--------------------------------------------------------