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trapezohedron
(redirected from trapezohedra)

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trapezohedron [trə¦pē·zō¦hē·drən]
(crystallography)
An isometric crystal form of 24 faces, each face of which is an irregular four-sided figure. Also known as icositetrahedron; leucitohedron; tetragonal trisoctahedron.


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Qualitatively, the polyhedra that most resemble the tiling sets of the first infinite family are the trapezohedra (Holden 1971), which are duals to the semi-regular antiprisms and which can have spheres inscribed in them.
Analcime from Wasson Bluff is commonly present as well formed trapezohedra growing on other crystals such as twinned heulandite.
 
 
 
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