Mineral phase
- IMA name
- Chabazite-Na
- Class
- silicate mineral
- Compound type
- tektosilicate
- Formula
- $(Na_2,K_2,Ca,Sr)(Al_2Si_4O_{12})\bullet6(H_2O)$
- Chemical formula
- (Na2,K2,Ca,Sr)(Al2Si4O12)•6(H2O)
- Elemental formula
- (Na)0.5-2 (Ca)0-0.5 (K)0-1 (Sr)0-0.5 Al2 Si4 O18 H8
- Isotope mixture type
- terrestrial abundance
- Composition comments
- Na must be the dominant species between Ca and K. Sr and Mg are occasionally. Other impurity: Fe
- Oxides
-
Formula $Na_{2}O$ $K_{2}O$ $SrO$ $CaO$ $MgO$ $Al_{2}O_{3}$ $SiO_{2}$ $H_{2}O$ Mass fraction (%)
Strunz
- Class
- silicates (09)
- Division
- tektosilicate with zeolitic H2O (09.G)
- Family
- Chains of 6-membered rings – tabular zeolites (09.GD)
- Code
- 09.GD.10
Dana
- Major class
- silicates (VIII)
- Class
- tectosilicate zeolite group (77)
- Type
- true zeolites (77.01)
- Group
- Chabazite and related species (77.01.02)
- Code
- 77.01.02.01a
- Phase type
- crystalline
- Crystal system
- trigonal
- Crystal class
- ditrigonal-scalenohedral
- Crystal class symbol
- -3m (D3d)
- Crystal spacegroup
- R-3m
- Molar mass
- 523.135 $g/mol$
- Density
- 2.05 - 2.16 $g/cm^3$
- State NTP
- solid
- Refringence type
- biaxial
- Refringence sign
- positive or negative
- Birefringence
- 0.0020-0.0050
- Refraction index $n_{\alpha}$
- 1.478-1.485
- Refraction index $n_{\beta}$
- 1.48-1.4895
- Refraction index $n_{\gamma}$
- 1.48-1.49
- Pure color
- colorless
- Color
- Colorless, White, Yellowish, Pinkish, Reddish white.
- Diaphaneity
- transparent to translucent
- Luster
- vitreous