Fig. 252 - Dana sets of wooden crystal models3D ModelNoAI
Fig. 252 - Dana sets of wooden crystal models
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Triangles: 12
Vertices: 8
More model informationIII. Hexagonal system
A. Hexagonal division
2. Hexagonal-Dipyramidal class - 6/m
Figure 252. Third-order dipyramid {21-33}
Dana sets of wooden crystal models, arranged by the late Professor William E. Ford to illustrate Dana’s Textbook of Mineralogy 4th edition (1932), originally produced by Dr. Krantz Rheinisches Mineralien-Kontor (Bonn).
Website: http://geology.uaic.ro/muzee/mineralogie/
Concept & 3D-modelling by Andrei Ionut APOPEI
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