Nahcolite: Difference between revisions
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|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility =96 g/l | |Solubility =96 g/l | ||
|Density =2 | |Density =2.2 g/cm³ | ||
|MolVolume =37 | |MolVolume =37.99 cm3/mol | ||
|Molweight =84 | |Molweight =84.01 g/mol | ||
|Transparency =transparent to translucent | |Transparency =transparent to translucent | ||
|Cleavage =perfect | |Cleavage =perfect | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices =n<sub>x</sub> = 1 | |Refractive_Indices =n<sub>x</sub> = 1.376<br>n<sub>y</sub> = 1.500<br>n<sub>z</sub> = 1.582 | ||
|Birefringence =Δ = 0 | |Birefringence =Δ = 0.206 | ||
|optical_Orientation =biaxial negative | |optical_Orientation =biaxial negative | ||
|Pleochroism = | |Pleochroism = |
Revision as of 15:00, 20 December 2011
Nahcolite[1][2] | |
Mineralogical name | Sodium hydrogen carbonate |
Chemical name | Nahcolite |
Trivial name | |
Chemical formula | NaHCO3 |
Other forms | |
Crystal system | monoclinic |
Crystal structure | |
Deliquescence humidity 20°C | |
Solubility (g/l) at 20°C | 96 g/l |
Density (g/cm³) | 2.2 g/cm³ |
Molar volume | 37.99 cm3/mol |
Molar weight | 84.01 g/mol |
Transparency | transparent to translucent |
Cleavage | perfect |
Crystal habit | |
Twinning | |
Phase transition | |
Chemical behavior | |
Comments | pH about 8 |
Crystal Optics | |
Refractive Indices | nx = 1.376 ny = 1.500 nz = 1.582 |
Birefringence | Δ = 0.206 |
Optical Orientation | biaxial negative |
Pleochroism | |
Dispersion | |
Used Literature | |
{{{Literature}}} |
back to Carbonate
Weblinks[edit]
- ↑ http://webmineral.com/data/Nahcolite.shtml viewed on 09/06/2011
- ↑ http://www.mindat.org/min-2831.html viewed on 09/06/2011