General Information:
Chemical Formula:Mg5(CO3)4(OH)2·5(H2O)
Composition:(Molecular Weight = 485.65 gm)Magnesium 25.02 %
MgHydrogen 2.49 %
H Carbon 9.89 %
C Oxygen 62.59 %
O Empirical Formula: Mg5(CO3)4(OH)2·5(H2O)
Environment:Occurs on the lava. Metastable phase between nesquehonite and hydromagnesite.
Locality:TL: Alphroessa, Santorin, Greece.
Name Origin:Named for one of the cones, Giorgios, created during the eruption at Santorin islands in 1866.
Physical Properties: Color:white.
Density:2.155 - 2.185, Average = 2.17
Habits:Spherical - Spherical, rounded aggregates., Fibrous - Crystals made up of fibers., Encrustations - Forms crust-like aggregates on matrix.
Streak:white
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