Lansfordite: Difference between revisions
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|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility = | |Solubility = | ||
|Density =1 | |Density =1.73 g/cm³ | ||
|MolVolume = | |MolVolume = | ||
|Molweight =174 | |Molweight =174.4 g/mol | ||
|Transparency =translucent | |Transparency =translucent | ||
|Cleavage =perfect | |Cleavage =perfect | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices =n<sub>x</sub> = 1 | |Refractive_Indices =n<sub>x</sub> = 1.456<br>n<sub>y</sub> = 1.476<br>n<sub>z</sub> = 1.502 | ||
|Birefringence =Δ = 0 | |Birefringence =Δ = 0.052 | ||
|optical_Orientation =negative | |optical_Orientation =negative | ||
|Pleochroism = | |Pleochroism = |
Revision as of 14:59, 20 December 2011
Lansfordite[1][2] | |
Mineralogical name | Lansfordite |
Chemical name | Magnesium carbonate pentahydrate |
Trivial name | |
Chemical formula | MgCO3•5H2O |
Other forms | |
Crystal system | monoclinic |
Crystal structure | |
Deliquescence humidity 20°C | |
Solubility (g/l) at 20°C | |
Density (g/cm³) | 1.73 g/cm³ |
Molar volume | |
Molar weight | 174.4 g/mol |
Transparency | translucent |
Cleavage | perfect |
Crystal habit | |
Twinning | |
Phase transition | |
Chemical behavior | |
Comments | hardly soluble in water pH about 10 |
Crystal Optics | |
Refractive Indices | nx = 1.456 ny = 1.476 nz = 1.502 |
Birefringence | Δ = 0.052 |
Optical Orientation | negative |
Pleochroism | |
Dispersion | |
Used Literature | |
{{{Literature}}} |
back to Carbonate
Weblinks[edit]
- ↑ http://webmineral.com/data/Lansfordite.shtml viewed on 09/07/2011
- ↑ http://www.mindat.org/min-2324.html viewed on 09/06/2011