General Information:
Chemical Formula:
Na2Mg3Si6O16·8(H2O)
Composition:
(Molecular Weight = 687.52 gm)
Sodium 6.69 % Na
Magnesium 10.61 % Mg
Silicon 24.51 % Si
Hydrogen 2.35 % H
Oxygen 55.85 % O
Empirical Formula:
Na2Mg3Si6O16·8(H2O)
Environment:
In dolomitic oil-shale.
IMA Status:
Approved IMA 1960
Locality:
Green River, Sweetwater Coundy, Wyoming, USA.
Name Origin:
Named for Gerald Francis Loughlin (1880-1946), chief geologist, U. S. Geological Survey.
Physical Properties:
Color:
pearl white.
Density:
2.165
Habits:
Massive - Fibrous - Distinctly fibrous fine-grained forms., ,
Luster:
Silky
Streak:
white
More details...