Constituent
- Name
- analcime (zeolite)
- IMA name
- Analcime
- Class
- silicate mineral
- Compound type
- tektosilicate
- Relevance
- main - major
- Arrangement
- homogeneous in multi-phases
- Mass fraction
- 0.02 $\pm$ 0.1
- Abundance comments
- Approximately half of the sample
- Formula
- $Na(AlSi_2O_6)\bullet(H_2O)$
- Chemical formula
- NaAlSi2O6•(H2O)
- Elemental formula
- Na Al Si2 O7 H2
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $Na_{2}O$ $Al_{2}O_{3}$ $SiO_{2}$ $H_{2}O$ Mass fraction (%) 14.08 23.16 54.58 8.18
Strunz
- Class
- silicates (09)
- Division
- tektosilicate with zeolitic H2O (09.G)
- Family
- Chains of single connected 4-membered rings (09.GB)
- Code
- 09.GB.05
Dana
- Major class
- silicates (VIII)
- Class
- tectosilicate zeolite group (77)
- Type
- true zeolites (77.01)
- Group
- Analcime and related species (77.01.01)
- Code
- 77.01.01.01
- Phase type
- crystalline
- Crystal system
- triclinic
- Crystal class
- pedial
- Crystal class symbol
- 1 (C1)
- Crystal spacegroup
- P1
- Comments
- Can be cubic, tetragonal, orthorhombic or monoclinic depending upon ordering.
- Molar mass
- 220.15 $g/mol$
- Density
- 2.24-2.29 $g/cm^3$
- Refringence type
- biaxial
- Refringence sign
- negative
- Birefringence
- 0.0010
- Refraction index $n_{\alpha}$
- 1.479-1.493
- Refraction index $n_{\gamma}$
- 1.48-1.494
- Color
- colorless, White, Grayish white, Greenish white, Yellowish white, Reddish white
- Diaphaneity
- transparent to translucent
- Luster
- vitreous