Ellenbergerite

General Information:
 Chemical Formula:
Mg6TiAl6Si8O28(OH)10
 Composition:
(Molecular Weight = 1,198.34 gm)
Magnesium 12.17 % Mg
Titanium 4.00 % Ti
Aluminum 13.51 % Al
Silicon 18.75 % Si
Hydrogen 0.84 % H 
Oxygen 50.73 % O 
 Empirical Formula:
Mg6TiAl6Si8O28(OH)10
 IMA Status:
Approved IMA 1986
Physical Properties:
 Cleavage:
None
 Color:
colorless, purple, or lilac.
 Density:
3.15 - 3.22, Average = 3.18
 Diaphaniety:
Transparent
 Hardness:
6.5 - Pyrite
 Luster:
Vitreous (Glassy)
 Streak:
white
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