What is a diplohedron in mineralogy ?

Diplohedron : definition

A diplohedron (or diploid) is a polyhedron with 24 faces, half equivalent to those of a pentagonododecahedron, each face of which has split in two. The faces are quadrilaterals, sometimes trapezoidal, grouped in pairs. The shapes are of the type {hkl} positive and {hkl} negative, the faces intersecting the crystallographic axes at unequal distances. It is a specific crystalline form of the cubic system ; disdodecahedron is a synonymous term.

Pattern to print and cut in the section "our crystallographic models".

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