Glushinskite

From Saltwiki
Glushinskite[1][2]
Mineralogical name Glushinskite
Chemical name Magnesium oxalate dihydrate
Trivial name
Chemical formula Mg(C2O4)•2(H2O)
Other forms
Crystal system monoclinic
Crystal structure Space Group: C 2/c
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 1.85 g/cm³
Molar volume
Molar weight 148.355 g/mol
Transparency
Cleavage
Crystal habit
Twinning
Phase transition alpha and beta forms are known
Chemical behavior
Comments Formed by reaction between Mg-rich minerals and oxalic acid secreted by incrusting lichen.
Crystal Optics
Refractive Indices nx =1.365
ny = 1.53
nz = 1.595
Birefringence Δ = 0,2300
Optical Orientation biaxial (-)
Pleochroism
Dispersion r < v weak
Used Literature


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