Fig. 270 - Dana sets of wooden crystal models3D ModelNoAI
Fig. 270 - Dana sets of wooden crystal models
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Triangles: 36
Vertices: 20
More model informationIII. Hexagonal system
B. Rhombohedral division
1. Hexagonal-Scalenohedral class - -32/m
Figure 270. Positive and negative rhombohedrons: {10-11} {01-12} - Calcite
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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