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General Information:
 Chemical Formula:
Mg2(CO3)(OH)2·3(H2O)
 Composition:
(Molecular Weight = 196.68 gm)
Magnesium 24.72 % Mg
Hydrogen 4.10 % H 
Carbon 6.11 % C 
Oxygen 65.08 % O 
 Empirical Formula:
Mg2(CO3)(OH)2·3(H2O)
 Environment:
Low-temperature hydrothermal mineral in veins and crusts in serpentinized ultrabasic rocks.
 Locality:
Val Brutta, and Francia in the Val Lanterna, Lombardy, Italy.
 Name Origin:
Named after the Italian mineralogist, Ettore Artini (1866-1928), mineralogist at the University of Milan.
Physical Properties:
 Cleavage:
[100] Perfect, [001] Good
 Color:
white.
 Density:
2 - 2.03, Average = 2.01
 Diaphaniety:
Translucent
 Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Encrustations - Forms crus t-like aggregates on matrix.
 Hardness:
2.5 - Finger Nail
 Luminescence:
None.
 Luster:
Silky
 Streak:
white
More details...

See more at Wikipedia.org...

General Information:
 Chemical Formula:
Mg2(CO3)(OH)2·3(H2O)
 Composition:
(Molecular Weight = 196.68 gm)
Magnesium 24.72 % Mg
Hydrogen 4.10 % H 
Carbon 6.11 % C 
Oxygen 65.08 % O 
 Empirical Formula:
Mg2(CO3)(OH)2·3(H2O)
 Environment:
Low-temperature hydrothermal mineral in veins and crusts in serpentinized ultrabasic rocks.
 Locality:
Val Brutta, and Francia in the Val Lanterna, Lombardy, Italy.
 Name Origin:
Named after the Italian mineralogist, Ettore Artini (1866-1928), mineralogist at the University of Milan.
Physical Properties:
 Cleavage:
[100] Perfect, [001] Good
 Color:
white.
 Density:
2 - 2.03, Average = 2.01
 Diaphaniety:
Translucent
 Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Encrustations - Forms crus t-like aggregates on matrix.
 Hardness:
2.5 - Finger Nail
 Luminescence:
None.
 Luster:
Silky
 Streak:
white
More details...