Analcima

Structural context

Analcime
Crystal System triclinicCrystal Class pedialSpace Group P1

Chemical context

Stoichiometric formulas

Analcime
mindat.org
  • March 13, 2023Na(AlSi2O6)·H2OAccording to the International Zeolite Association (http://www.iza-online.org/natural/Datasheets/Analcime/Analcime.html) the mineral has variable composition, that can be given as Na16-x(H2O)16+x[Al16-xSi32+xO96], with x varying from -3.4 to +4.3. The Na content generally is ~16 atoms per formula unit, but may range from 12 to 17. Si ranges from 28.6 to 36.3.
IMA
  • March 13, 2023Na(AlSi2O6) · H2O
mineralogy.rocks
  • Aug. 30, 2022NaAlSi2O6·H2O

Physical properties

ColorColor entities, recognized using a custom trained NER model
    • colourless
    • gray
          Color noteOriginal color note from the source
          White, colourless, gray, pink, green, yellow
          StreakStreak entities, recognized using a custom trained NER model
            Streak noteOriginal streak note from the source
            White
            Lustre
            Vitreous
            Sub-Vitreous
            Dull
            Fracture
            Irregular/Uneven
            Sub-Conchoidal
            Transparency
            Transparent
            Translucent
            Tenacity
            brittle
            Hardness
            5—5.5
            Measured density
            2.24—2.29
            Calculated density
            2.271