Magnesite

From Saltwiki
Magnesite<ref>http://webmineral.com/data/Magnesite.shtml viewed on 09/06/2011</ref><ref>http://www.mindat.org/min-2482.html viewed on 09/06/2011</ref>
Mineralogical name Magnesite
Chemical name Magnesium carbonate
Trivial name
Chemical formula MgCO3
Other forms
Crystal system trigonal
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C 0.106 g/l
Density (g/cm³) 3.037 g/cm³
Molar volume
Molar weight 84.33 g/mol
Transparency transparent to opaque
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments very slowly soluble in 2M HCl
Crystal Optics
Refractive Indices no = 1.700-1.719
ne = 1.509-1.527
Birefringence Δ = 0.191-0.199
Optical Orientation perfect
Pleochroism
Dispersion
Used Literature


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