Formula: Na2Al2Si3O10.2H2O
Hardness: 5-5.5
Description: A silicate mineral with an orthorhomic crystal system and a silky lustre in dense crystal groups to vitreous or pearly lustre in individual crystals. Most often occuring in dense acicular and radial groups with slender crystals protruding.
Specimen number: U056


  • Title: Natrolite
  • Type: Mineral
  • Rights: Geoscience Australia / CC-BY 4.0
  • Photographer: Chris Fitzgerald

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