Bischofite
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| Bischofite | |
|---|---|
| General | |
| Category | Halide mineral |
| Chemical formula | MgCl2•6(H2O) |
| Strunz classification | 03.BB.15 |
| Dana classification | 09.02.09.01 |
| Identification | |
| Color | Colorless to white |
| Crystal habit | Fibrous to massive |
| Crystal system | Monoclinic - prismatic (2/m) |
| Twinning | polysynthetic |
| Cleavage | None |
| Fracture | Conchoidal to uneven |
| Mohs scale hardness | 1.5 - 2 |
| Luster | Vitreous - greasy |
| Streak | White |
| Diaphaneity | Translucent to transparent |
| Specific gravity | 1.56 |
| Optical properties | Biaxial (+) |
| Refractive index | ᾳ = 1.495 β = 1.507 γ = 1.528 |
| Solubility | Deliquescent |
| References | [1][2] |
Bischofite is a hydrous magnesium chloride mineral with formula MgCl2•6(H2O)
Bischfite occurs in marine evaporite deposits. It was first described in 1877 for an occurrence in Leopoldshall and Stassfut, Germany and named for German geologist Karl Gustav Bischo (1792-1870).[1]
It occurs in association with carnallite, halite and kieserite.[2]
[edit] References
- ^ a b http://webmineral.com/data/Bischofite.shtml Webmineral data
- ^ a b http://rruff.geo.arizona.edu/doclib/hom/bischofite.pdf Handbook of Mineralogy
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