Lansfordite: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 18: | Line 18: | ||
|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 = 0,052 | |Birefringence =Δ = 0,052 | ||
|optical_Orientation =negative | |optical_Orientation =negative | ||
| Line 25: | Line 25: | ||
|Phase_Transition = | |Phase_Transition = | ||
|chemBehavior = | |chemBehavior = | ||
|Comments = | |Comments =hardly soluble in water<br>pH about 10 | ||
}} | }} | ||
Revision as of 12:38, 9 July 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