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HEXOCTAHEDRON [2 records]

Record 1 2012-04-12

English

Subject field(s)
  • Mineralogy
DEF

An isometric crystal having 48 equal triangular faces.

CONT

[A] hexoctahedron is composed of 48 triangular faces, each of which intersects all three crystallographic axes at different lengths.

French

Domaine(s)
  • Minéralogie
DEF

Polyèdre à 48 faces, forme cristalline appartenant au système cubique.

CONT

L'ensemble produit l'«hexaoctaèdre», qui constitue la forme simple la plus riche en faces, soit quarante-huit triangles équilatéraux [...]

CONT

Les huit sommets du cube étant semblables, ces huit sommets donnent : 8 X 6 = 48 facettes. Si ces facettes sont développées au point de faire disparaître le cube [...], nous avons un solide limité par 48 facettes; 48 plans = l'hexaoctaèdre.

Spanish

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Record 2 2011-09-26

English

Subject field(s)
  • Mineralogy
DEF

A crystal form in the isometric system having 24 similar quadrilateral faces arranged in pairs.

CONT

The diploid is a rare form composed of twenty-four faces which correspond to one-half of the faces of a hexoctahedron. The diploid may be pictured as having two faces built up on each face of the pyritohedron.

French

Domaine(s)
  • Minéralogie
CONT

Parmi les formes hémiédriques les plus fréquentes [du système cubique] il y a lieu de citer [...] le «diploèdre» [...] avec vingt-quatre faces de quadrilatères irréguliers qui se rencontre dans les cristaux de leucite.

Spanish

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