Constituent
- Name
- Natron
- IMA name
- Natron
- Class
- non-silicate mineral
- Compound type
- carbonate
- Relevance
- main - major
- Arrangement
- single phase
- Mass fraction
- 1.0 $\pm$ 1e-05
- Abundance comments
- 99.999% pure, < 15ppm trace metal
- Formula
- $Na_2CO_3 \bullet 10(H_2O)$
- Chemical formula
- Na2CO3•10(H2O)
- Elemental formula
- Na2 C O13 H20
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $Na_{2}O$ $CO_{2}$ $H_{2}O$ Mass fraction (%) 21.66 15.38 62.96
Strunz
- Class
- carbonates - nitrates (05)
- Division
- carbonates without additional anions, with H2O (05.C)
- Family
- with large cations (alkali and alkali-earth carbonates) (05.CB)
- Code
- 05.CB.10
Dana
- Major class
- carbonates, nitrates, borates (V)
- Class
- hydrated carbonates (15)
- Type
- where A+(XO3)·x(H2O) (15.01)
- Group
- -Natron- group (15.01.02)
- Code
- 15.01.02.01
- Phase type
- crystalline
- Crystal system
- monoclinic
- Crystal class
- prismatic
- Crystal class symbol
- 2/m (C2h)
- Crystal spacegroup
- P2/m
- Comments
- also class domatic m (Cs), space group Cc
- Texture
- polycrystalline
- Molar mass
- 286.14 $g/mol$
- Density
- 1.478 $g/cm^3$
- Refringence type
- biaxial
- Refringence sign
- negative
- Birefringence
- 0.035
- Refraction index $n_{\alpha}$
- 1.405
- Refraction index $n_{\beta}$
- 1.425
- Refraction index $n_{\gamma}$
- 1.44
- Dispersion V
- r > v
- Color
- colorless, white, gray, yellow
- Diaphaneity
- transparent to translucent
- Luster
- vitreous