Lansfordite

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Lansfordite[1][2]
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 = 1,456
ny = 1,476
nz = 1,502
Birefringence Δ = 0,052
Optical Orientation negative
Pleochroism
Dispersion
Used Literature
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