Cube trunctuated by octahedron Small 320×294 Medium 640×587 Large 1024×940 Download Tiff Original 2400×2202 | (451.7 KB) Description "When a corner or an edge of one form is replaced by a face of another form, the first is said to be trunctuated by the second." — Ford, 1912 Keywords cube, geology, geometry, octahedron, trunctuate Galleries Cubes Source: William E. Ford Dana's Manual of Mineralogy (New York: John Wiley and Sons, Inc, 1912) 14