Tetragonal System
Cochise College
Virtual Geology Museum
Hall of Minerals
Crystals and Crystal Models
Tetragonal System
Roger Weller,
geology instructor (
wellerr@cochise.edu )
last edited: 10/25/10 number of photos:
46
illustrations
Illustrations from Manual of Mineralogy and Petrology,
by James D. Dana, 1889:
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wooden crystal models
model 10:
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model 11:
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model 12:
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model 54-dipyramid:
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model 56:
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model 57-tetragonal prism and basal pinacoid:
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model 58-octagonal prism and basal pinacoid:
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model 60:
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model 66:
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model 69:
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model 72-sphenoid:
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mineral examples of tetragonal crystals
apophyllite:
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chalcopyrite:
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scapolite:
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scheelite:
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vesuvianite:
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wulfenite:
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Photos are copyright free for non-commercial
educational uses.
Just credit photos to R.Weller/Cochise College.
Copyright 2010 R.Weller