Tachyhydrite: Difference between revisions
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m (Protected "Tachyhydrite" ([edit=sysop] (indefinite) [move=sysop] (indefinite))) |
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|Solubility = | |Solubility = | ||
|Density =1.667 g/cm<sup>3</sup> | |Density =1.667 g/cm<sup>3</sup> | ||
|MolVolume =309 | |MolVolume =309.9 cm<sup>3</sup>/mol | ||
|Molweight =517 | |Molweight =517.7 g/mol | ||
|Transparency =transparent | |Transparency =transparent | ||
|Cleavage =perfect | |Cleavage =perfect | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices =n<sub>o</sub>= 1 | |Refractive_Indices =n<sub>o</sub>= 1.520-1.522<br> n<sub>e</sub> = 1.512-1.513 | ||
|Birefringence =Δ = 0 | |Birefringence =Δ = 0.008-0.009 | ||
|optical_Orientation =negative | |optical_Orientation =negative | ||
|Pleochroism = | |Pleochroism = | ||
Revision as of 15:15, 20 December 2011
| Tachyhydrite[1][2] | |
| Mineralogical name | Tachyhydrite |
| Chemical name | Calciummagnesiumchloride dodecahydrate |
| Trivial name | |
| Chemical formula | CaMg2Cl6•12H2O |
| Other forms | |
| Crystal system | trigonal |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | |
| Density (g/cm³) | 1.667 g/cm3 |
| Molar volume | 309.9 cm3/mol |
| Molar weight | 517.7 g/mol |
| Transparency | transparent |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | hygroscopic and deliquescent |
| Crystal Optics | |
| Refractive Indices | no= 1.520-1.522 ne = 1.512-1.513 |
| Birefringence | Δ = 0.008-0.009 |
| Optical Orientation | negative |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Chloride
Weblinks[edit]
- ↑ http://webmineral.com/data/Tachyhydrite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-3865.html viewed on 29/07/2010