Aphthitalite: Difference between revisions
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{{Infobox_Salt | {{Infobox_Salt | ||
|Footnote = <ref>http://webmineral.com/data/Aphthitalite.shtml viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-280.html viewed on 29/07/2010</ref> | |Footnote = <ref>http://webmineral.com/data/Aphthitalite.shtml viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-280.html viewed on 29/07/2010</ref> <ref><bib id="JCPDS:1991"></ref> | ||
|photo = [[File:Aphthitalit-19082010-klein.jpg|300px]] | |photo = [[File:Aphthitalit-19082010-klein.jpg|300px]] | ||
|mineralogical_Name = Aphthitalite | |mineralogical_Name = Aphthitalite | ||
| Line 11: | Line 11: | ||
|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility = | |Solubility = | ||
|Density = | |Density = 1.35 g/cm<sup>3</sup> | ||
|MolVolume = 246.2 cm<sup>3</sup>/mol | |MolVolume = 246.2 cm<sup>3</sup>/mol | ||
|Molweight = 332 g/mol | |Molweight = 332.41 g/mol | ||
|Transparency = transparent to opaque | |Transparency = transparent to opaque | ||
|Cleavage = imperfect to fair | |Cleavage = imperfect to fair | ||
| Line 30: | Line 30: | ||
back to [[Sulfate]] | back to [[Sulfate]] | ||
== | ==References== | ||
<references/> | <references/> | ||
[[Category:Aphthitalite]][[Category:Sulfate]][[Category:Sulphate]][[Category:Salt]][[Category:Editing]] | [[Category:Aphthitalite]][[Category:Sulfate]][[Category:Sulphate]][[Category:Salt]][[Category:Editing]] | ||
Revision as of 13:08, 6 February 2015
| Aphthitalite[1][2] [3] | |
| |
| Mineralogical name | Aphthitalite |
| Chemical name | Potassium sodium sulphate |
| Trivial name | Glaserite, Vesuvian Salt |
| Chemical formula | K3Na(SO4)2 Na2SO4•3K2SO4 |
| Other forms | |
| Crystal system | trigonal |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | |
| Density (g/cm³) | 1.35 g/cm3 |
| Molar volume | 246.2 cm3/mol |
| Molar weight | 332.41 g/mol |
| Transparency | transparent to opaque |
| Cleavage | imperfect to fair |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | |
| Crystal Optics | |
| Refractive Indices | no = 1.487-1.491 ne = 1.492-1.499 |
| Birefringence | Δ = 0.005-0.008 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulfate
References[edit]
- ↑ http://webmineral.com/data/Aphthitalite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-280.html viewed on 29/07/2010
- ↑ <bib id="JCPDS:1991">