General Information:
Chemical Formula:
(Mg,Fe++)5Si6O16(OH)2
Composition:
(Molecular Weight = 619.47 gm)
Magnesium 14.71 % Mg
Iron 11.27 % Fe
Silicon 27.20 % Si
Hydrogen 0.33 % H
Oxygen 46.49 % O
Empirical Formula:
Mg3.75Fe2+1.25Si6O16(OH)2
IMA Status:
Approved IMA 1977
Physical Properties:
Cleavage:
[210] Perfect
Color:
colorless or pink brown.
Density:
3.03
Diaphaniety:
Transparent
Hardness:
2-2.5 - Gypsum-Finger Nail
Luster:
Silky - Pearly
Streak:
white
More details...