Hydromagnesite
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| Hydromagnesite[1][2] | |
| Mineralogical name | Hydromagnesite |
| Chemical name | Magnesium hydroxocarbonate |
| Trivial name | |
| Chemical formula | Mg5(OH)2(CO3)4•4H2O |
| Other forms | |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | |
| Density (g/cm³) | 2.236 g/cm3 |
| Molar volume | |
| Molar weight | 467,5 g/mol |
| Transparency | transparent |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | hardly soluble in water |
| Crystal Optics | |
| Refractive Indices | nx = 1,515-1,523 ny = 1,530-1,527 nz = 1,544-1,545 |
| Birefringence | Δ = 0,029-0,022 |
| Optical Orientation | biaxial positive |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Carbonate
Weblinks[edit]
- ↑ http://webmineral.com/data/Hydromagnesite.shtml viewed on 09/07/2011
- ↑ http://www.mindat.org/min-1979.html viewed on 09/06/2011