Nesquehonite

From Saltwiki
Nesquehonite<ref>http://webmineral.com/data/Nesquehonite.shtml viewed on 09/06/2011</ref><ref>http://www.mindat.org/min-2885.html viewed on 09/06/2011</ref>
Mineralogical name
Chemical name Magnesium carbonate trihydrate
Trivial name
Chemical formula MgCO3•3H2O
Other forms
Crystal system monoclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C 1.79 g/l (16°C)
Density (g/cm³) 1.83-1.85 g/cm³
Molar volume
Molar weight 138.37 g/mol
Transparency transparent to translucent
Cleavage perfect to good
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments hardly soluble in water
pH about 10
Crystal Optics
Refractive Indices nx = 1.417
ny = 1.503
nz = 1.527
Birefringence Δ = 0.110
Optical Orientation negative
Pleochroism
Dispersion
Used Literature


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