Meridianiite

Author: Amelie Stahlbuhk
back to Sulfate

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. [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.

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
[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.
[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.

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. In: Cryst. Growth Des., 7 (12), 2460-2466
[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. In: Geology, 34 (11), 957-960
[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. In: Geochimica et Cosmochimica Act, 75 (12), 3600-3626, 10.1016/j.gca.2011.03.038,

A phase is a physically distinctive form of matter and is characterized by having relatively uniform chemical and physical properties.