Bischofite: Difference between revisions
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{{Infobox_Salt | {{Infobox_Salt | ||
|Footnote = <ref> http://webmineral.com/data/Bischofite.shtml viewed on 29/07/2010</ref><ref> http://www.mindat.org/min-681.html viewed on 29/07/2010</ref> | |Footnote = <ref> http://webmineral.com/data/Bischofite.shtml viewed on 29/07/2010</ref><ref> http://www.mindat.org/min-681.html viewed on 29/07/2010</ref> <ref><bib id="Broul.etal:1981"></ref> | ||
|photo = <!-- [[Image:"file name"|300px]]--> | |photo = <!-- [[Image:"file name"|300px]]--> | ||
|mineralogical_Name = Bischofite | |mineralogical_Name = Bischofite | ||
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|Crystal_System =monoclinic | |Crystal_System =monoclinic | ||
|Crystal_Structure = | |Crystal_Structure = | ||
|Deliqueszenzhumidity =33.1% | |Deliqueszenzhumidity =33.1% | ||
|Solubility = 543 g/l | |Solubility = 543 g/l | ||
|Density =1. | |Density =1.57 g/cm<sup>3</sup> | ||
|MolVolume =129.6 cm<sup>3</sup>/mol | |MolVolume =129.6 cm<sup>3</sup>/mol | ||
|Molweight =203. | |Molweight =203.30 g/mol | ||
|Transparency =transparent to translucent | |Transparency =transparent to translucent | ||
|Cleavage =none | |Cleavage =none | ||
| Line 34: | Line 34: | ||
<br clear=all> | <br clear=all> | ||
{|border="2" cellspacing="0" cellpadding="4" width="52%" align="left" class="wikitable" | {|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"/>'' | |+''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| 0°C | ||
Revision as of 14:28, 6 February 2015
| Bischofite[1][2] [3] | |
| 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% |
| Solubility (g/l) at 20°C | 543 g/l |
| Density (g/cm³) | 1.57 g/cm3 |
| Molar volume | 129.6 cm3/mol |
| Molar weight | 203.30 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
- ↑ <bib id="Broul.etal:1981">
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. |  |