Mineral phase
- IMA name
- Sodalite
- IMA Code
- Sdl
- Class
- silicate mineral
- Compound type
- tektosilicate
- Formula
- Na8Al6Si6O24Cl2
- Chemical formula
- Na8Al6Si6O24Cl2
- Elemental formula
- (Na+)8 Al6 Si6 O24 (Cl-)2
- Isotope mixture type
- terrestrial abundance
- Composition comments
- all O atoms carries a charge of -1/4
- Oxides
-
Formula Na2O Al2O3 SiO2 Cl Mass fraction (%) 25.58 31.56 37.2 7.32 - Oxides comments
- -1.65 % -O=Cl2
Strunz
- Class
- silicates (09)
- Division
- tektosilicate without zeolitic H2O (09.F)
- Family
- with additional anions (09.FB)
- Code
- 09.FB.10
Dana
- Major class
- silicates (VIII)
- Class
- tectosilicate Al-Si framework (76)
- Type
- Feldspathoids and related species (76.02)
- Group
- Sodalite group (76.02.03)
- Code
- 76.02.03.01
- Phase type
- crystalline
- Crystal system
- isometric (cubic)
- Crystal class
- hextetrahedral
- Crystal class symbol
- -43m (Td)
- Crystal spacegroup
- P-43n
- Molar mass
- 969.21 g/mol
- Density
- 2.29 g/cm3
- State NTP
- solid
- Refringence type
- isotropic
- Refringence sign
- no
- Birefringence
- 0
- Refraction index nα
- 1.483 - 1.484
- Pure color
- colorless
- Color
- azure blue, white, pink, gray, green
- Diaphaneity
- transparent to translucent
- Luster
- vitreous