Darapskite
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| Darapskite[1][2] | |
| |
| Mineralogical name | Darapskite |
| Chemical name | Trisodiumsulphate nitrate Monohydrate |
| Trivial name | |
| Chemical formula | Na3(SO4)(NO3)•H2O NaNO3•Na2SO4•H2O |
| Other forms | |
| Crystal system | {{{Crystal_System}}} |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | |
| Density (g/cm³) | |
| Molar volume | 111,4 cm3/mol |
| Molar weight | 245 g/mol |
| Transparency | transparent |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | can be peroduced from a solution of Na2SO4 and NaNO3 at 14-50°C |
| Crystal Optics | |
| Refractive Indices | nx = 1,391 ny = 1,481 nz = 1,486 |
| Birefringence | Δ = 0,095 |
| Optical Orientation | negative |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulphate
Weblinks[edit]
- ↑ http://webmineral.com/data/Darapskite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-1226.html viewed on 29/07/2010