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Sistema hexagonal

El mineral beril és un exemple de cristalls hexagonals
Arranjament hexagonal tridimensional

En cristal·lografia i cristal·loquímica, el sistema cristal·lí hexagonal és un dels set sistemes cristal·lins. Té la mateixa simetria que un prisma regular amb una base hexagonal; només hi ha una xarxa de Bravais hexagonal. Per exemple, el grafit cristal·litza sota aquesta forma.

Classes

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Els cristalls d'aquest sistema es classifiquen en les set classes següents:[1]

  • Hexagonal piramidal
  • Trigonal dipiramidal
  • Hexagonal dipiramidal
  • Hexagonal trapezohedral
  • Dihexagonal piramidal
  • Ditrigonal dipiramidal
  • Dihexagonal dipiramidal

Referències

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  1. Sistema Hexagonal a webmineral.com.

Enllaços externs

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Sistema hexagonal
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