General Information:
Chemical Formula:
Mg3Si4O10(OH)2
Composition:
(Molecular Weight = 379.27 gm)
Magnesium 19.23 % Mg
Silicon 29.62 % Si
Hydrogen 0.53 % H
Oxygen 50.62 % O
Empirical Formula:
Mg3Si4O10(OH)2
Environment:
Hydrothermal alteration of non-aluminous magnesian silicates.
Locality:
Common world wide.
Name Origin:
From the Arabic.
Physical Properties:
Cleavage:
[001] Perfect
Color:
pale green, white, gray white, yellowish white, or brownish white.
Density:
2.7 - 2.8, Average = 2.75
Diaphaniety:
Translucent
Habits:
Foliated - Two dimensional platy forms., Scaly - Morphology like fish scales., Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:
1 - Talc
Luminescence:
Fluorescent.
Luster:
Vitreous - Pearly
Streak:
white
More details...