General Information:
Chemical Formula:
Mg5(CO3)4(OH)2·5(H2O)
Composition:
(Molecular Weight = 485.65 gm)
Magnesium 25.02 % Mg
Hydrogen 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
More details...