Bischofite: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
|photo = <!-- [[Image:"file name"|300px]]--> | |photo = <!-- [[Image:"file name"|300px]]--> | ||
|mineralogical_Name = Bischofite | |mineralogical_Name = Bischofite | ||
|chemical_Name = | |chemical_Name = Magnesium chloride hexahydrate | ||
|Trivial_Name = | |Trivial_Name = | ||
|chemical_Formula =MgCl<sub>2</sub>•6H<sub>2</sub>O | |chemical_Formula =MgCl<sub>2</sub>•6H<sub>2</sub>O | ||
| Line 9: | Line 9: | ||
|Crystal_System =monoclinic | |Crystal_System =monoclinic | ||
|Crystal_Structure = | |Crystal_Structure = | ||
|Deliqueszenzhumidity = | |Deliqueszenzhumidity =33.1% <bib id="Steiger etal: 2014"/> | ||
|Solubility = 543 g/l | |Solubility = 543 g/l | ||
|Density =1.56 g/cm<sup>3</sup> | |Density =1.56 g/cm<sup>3</sup> | ||
| Line 29: | Line 29: | ||
back to [[Chloride]] | back to [[Chloride]] | ||
==Hygroscopicity== | |||
<br clear=all> | |||
{|border="2" cellspacing="0" cellpadding="4" width="52%" align="left" class="wikitable" | |||
|+''Table 1: Deliquescence humidities of bischofite at different roud temperatures <bib id="Steiger etal: 2014"/>'' | |||
|- | |||
|bgcolor = "#F0F0F0" align=center| 0°C | |||
|bgcolor = "#F0F0F0" align=center| 10°C | |||
|bgcolor = "#F0F0F0" align=center| 20°C | |||
|bgcolor = "#F0F0F0" align=center| 30°C | |||
|bgcolor = "#F0F0F0" align=center| 40°C | |||
|bgcolor = "#F0F0F0" align=center| 50°C | |||
|- | |||
|bgcolor = "#FFFFEO" align=center| 34.1%r.h. | |||
|bgcolor = "#FFFFEO" align=center| 33.7%r.h. | |||
|bgcolor = "#FFFFEO" align=center| 33.1%r.h. | |||
|bgcolor = "#FFFFEO" align=center| 32.4%r.h. | |||
|bgcolor = "#FFFFEO" align=center| 31.5%r.h. | |||
|bgcolor = "#FFFFEO" align=center| 30.5%r.h. | |||
|} | |||
<br clear=all> | |||
==Weblinks== | ==Weblinks== | ||
<references/> | <references/> | ||
==Literature== | |||
<bibprint citation="Steiger etal: 2014"/> | |||
[[Category:Bischofite]][[Category:Chloride]][[Category:Salt]][[Category:InProgress]] | [[Category:Bischofite]][[Category:Chloride]][[Category:Salt]][[Category:InProgress]] | ||
Revision as of 15:31, 28 January 2015
| Bischofite[1][2] | |
| Mineralogical name | Bischofite |
| Chemical name | Magnesium chloride hexahydrate |
| Trivial name | |
| Chemical formula | MgCl2•6H2O |
| Other forms | |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | 33.1% [Steiger etal: 2014]Title: Weathering and Deterioration Author: Steiger, Michael; Charola A. Elena; Sterflinger, Katja 
|
| Solubility (g/l) at 20°C | 543 g/l |
| Density (g/cm³) | 1.56 g/cm3 |
| Molar volume | 129.6 cm3/mol |
| Molar weight | 203.33 g/mol |
| Transparency | transparent to translucent |
| Cleavage | none |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | decomposes at 116-118°C hygroscopic and deliquescent |
| Crystal Optics | |
| Refractive Indices | nx =1.494 ny = 1.507 nz = 1.528 |
| Birefringence | Δ = 0.034 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Chloride
Hygroscopicity[edit]
| 0°C | 10°C | 20°C | 30°C | 40°C | 50°C |
| 34.1%r.h. | 33.7%r.h. | 33.1%r.h. | 32.4%r.h. | 31.5%r.h. | 30.5%r.h. |
Weblinks[edit]
- ↑ http://webmineral.com/data/Bischofite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-681.html viewed on 29/07/2010
Literature[edit]
| [Steiger etal: 2014] | Steiger, Michael; Charola A. Elena; Sterflinger, Katja (2014): Weathering and Deterioration. In:: Stone in Architecture, Siegesmund S. and Snethlage R., 10.1007/978-3-642-45155-3_4. | |