Variations on the Hexakistetrahedron
thingiverse
The text mentions cubic forms as outlined by AEH Tutton: hexakistetrahedron, triakistetrahedron, and deltoid dodecahedron. Consult "Crystallography and Practical Crystal Measurement" written by AEH Tutton for the details, specifically Chapter XI on page 157. It is also featured in Figures 95, 96, and 97. View this information online at archive.org. The tetrahedrite model displayed above comes from Thing:837974. This model is made up of a tetrahedron combined with triakis tetrahedra as seen in Figure 100.
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