Meridianiite

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Author: Amelie Stahlbuhk
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Meridianiite
Mineralogical name Meridianiite
Chemical name Magnesium sulfate undecahydrate
Trivial name
Chemical formula MgSO4•4H2O
Other forms Kieserite MgSO4•H2O

Sanderite MgSO4•2H2O
Starkeyite MgSO4•4H2O
Pentahydrite MgSO4•5H2O
Hexahydrite MgSO4•6H2O
Epsomite MgSO4•7H2O

Crystal system triclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 1.512 g/cm³
Molar volume 210.67 cm3/mol
Molar weight 138.54 g/mol
Transparency
Cleavage
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments
Crystal Optics
Refractive Indices
Birefringence
Optical Orientation
Pleochroism
Dispersion
Used Literature
[Peterson.etal:2006]Title: Crystal molds on Mars: Melting of a possible new mineral species to create Martian chaotic terrain
Author: Peterson R. C., Wang R.
Link to Google Scholar
[Genceli.etal:2007]Title: Crystallization and Characterization of a New Magnesium Sulfate Hydrate MgSO4•11H2O
Author: Genceli F. E., Lutz M., Spek A. L., Witkamp G.-J.
Link to Google Scholar


General Information

The undecahydrate is stable at low temperatures in contact with a saturated magnesium sulfate solution. At temperatures above 0 °C it melts incongruently, resulting in epsomite and water. [Steiger.etal:2011a]Title: Decomposition reactions of magnesium sulfate hydrates and phase equilibria in the MgSO4-H2O and Na+-Mg2+-Cl--SO42--H2O systems with implications for Mars
Author: Steiger, Michael; Linnow, Kirsten; Ehrhardt, Dorothee; Rohde, Mandy
Link to Google Scholar
[Peterson.etal:2006]Title: Crystal molds on Mars: Melting of a possible new mineral species to create Martian chaotic terrain
Author: Peterson R. C., Wang R.
Link to Google Scholar
[Genceli.etal:2007]Title: Crystallization and Characterization of a New Magnesium Sulfate Hydrate MgSO4•11H2O
Author: Genceli F. E., Lutz M., Spek A. L., Witkamp G.-J.
Link to Google Scholar


Weblinks

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Literature

[Genceli.etal:2007]Genceli F. E., Lutz M., Spek A. L., Witkamp G.-J. (2007): Crystallization and Characterization of a New Magnesium Sulfate Hydrate MgSO4•11H2O. Cryst. Growth Des., 7 (12), 2460-2466Link to Google Scholar
[Peterson.etal:2006]Peterson R. C., Wang R. (2006): Crystal molds on Mars: Melting of a possible new mineral species to create Martian chaotic terrain. Geology, 34 (11), 957-960Link to Google Scholar
[Steiger.etal:2011a]Steiger, Michael; Linnow, Kirsten; Ehrhardt, Dorothee; Rohde, Mandy (2011): Decomposition reactions of magnesium sulfate hydrates and phase equilibria in the MgSO4-H2O and Na+-Mg2+-Cl--SO42--H2O systems with implications for Mars. Geochimica et Cosmochimica Act, 75 (12), 3600-3626, 10.1016/j.gca.2011.03.038,Link to Google Scholar