Glushinskite

Glushinskite
Mineralogical name	Glushinskite
Chemical name
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	148.36 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
{{{Literature}}}

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Literature

[Wilson.etal:1980]Title: Glushinskite, a naturally occurring magnesium oxalate
Author: Wilson, M. J.; Jones D.; Russell, J. D.

[Kolo.etal:2005]Title: In vitro formation of Ca-oxalates and the mineral glushinskite by fungal interaction with carbonate substrates and seawater
Author: Kolo, K.; Claeys, Ph.

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