Lansfordite

From Saltwiki
Lansfordite<ref>http://webmineral.com/data/Lansfordite.shtml viewed on 09/07/2011</ref><ref>http://www.mindat.org/min-2324.html viewed on 09/06/2011</ref>
Mineralogical name Lansfordite
Chemical name Magnesium carbonate pentahydrate
Trivial name
Chemical formula MgCO3•5H2O
Other forms
Crystal system monoclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 1.73 g/cm³
Molar volume
Molar weight 174.4 g/mol
Transparency translucent
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments hardly soluble in water
pH about 10
Crystal Optics
Refractive Indices nx = 1.465
ny = 1.468
nz = 1.507
Birefringence Δ = 0.042
Optical Orientation positiv
Pleochroism
Dispersion
Used Literature


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