Anhydrite: Difference between revisions
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|Literature = <bib id="Robie.etal:1978"> | |Literature = <bib id="Robie.etal:1978"/> <bibprint citation="Dana:1951"/> | ||
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== Literature== | == Literature== | ||
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[[Category:Stahlbuhk,Amelie]][[Category:Anhydrite]] [[Category:Sulfate]] [[Category:Sulphate]] [[Category:Salt]] [[Category:R-MSteiger]] [[Category:InProgress]] | [[Category:Stahlbuhk,Amelie]][[Category:Anhydrite]] [[Category:Sulfate]] [[Category:Sulphate]] [[Category:Salt]] [[Category:R-MSteiger]] [[Category:InProgress]] | ||
Revision as of 20:39, 13 February 2015
Author: Amelie Stahlbuhk
back to Sulfate
| Anhydrite | ||||
| Mineralogical name | Anhydrite | |||
| Chemical name | Calcium sulfate | |||
| Trivial name | ||||
| Chemical formula | CaSO4 | |||
| Other forms | CaSO4•0.5H2O (Bassanite) CaSO4•2H2O (Gypsum) | |||
| Crystal system | orthorhombic | |||
| Crystal structure | ||||
| Deliquescence humidity 20°C | ||||
| Solubility (g/l) at 20°C | ||||
| Density (g/cm³) | 2.96 g/cm3 | |||
| Molar volume | 45.94 cm3/mol | |||
| Molar weight | 136.14 g/mol | |||
| Transparency | ||||
| Cleavage | ||||
| Crystal habit | ||||
| Twinning | ||||
| Phase transition | ||||
| Chemical behavior | ||||
| Comments | ||||
| Crystal Optics | ||||
| Refractive Indices | nx=1.5698 ny=1.5754 nz=1.6136 | |||
| Birefringence | Δ=0.0438 | |||
| Optical Orientation | positive | |||
| Pleochroism | ||||
| Dispersion | 43.7° | |||
| Used Literature | ||||
| [Robie.etal:1978]Title: Thermodynamic properties of minerals and related substances at 298.15 K and 1 bar pressure and higher temperatures Author: Robie R.A., Hemingway B.S.; Fisher J.A. 
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References[edit]
Literature[edit]
| [Dana:1951] | Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & Sons | |
| [Robie.etal:1978] | Robie R.A., Hemingway B.S.; Fisher J.A. (1978): Thermodynamic properties of minerals and related substances at 298.15 K and 1 bar pressure and higher temperatures. In: U.S. Geol. Surv. Bull, 1452 () | |