Admontite

Admontite (or Admontit or Admontita) MgB6O10·7H2O is a mineral of magnesium, boron, oxygen, hydrogen. It is named after Admont, Austria. Its Mohs scale rating is 2 to 3.
See more at Wikipedia.org...

General Information:
 Chemical Formula:
MgB6O10·7(H2O)
 Composition:
(Molecular Weight = 375.27 gm)
Magnesium 6.48 % Mg
Boron 17.28 % B 
Hydrogen 3.76 % H 
Oxygen 72.48 % O 
 Empirical Formula:
Mg(B6O10)·7(H2O)
 IMA Status:
Approved IMA 1979
 Locality:
TL: Austria, Schidmaur, near Admont
Physical Properties:
 Cleavage:
None
 Color:
colorless.
 Density:
1.82 - 1.87, Average = 1.84
 Diaphaniety:
Transparent
 Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., ,
 Hardness:
2-3 - Gypsum-Calcite
 Luminescence:
Non-fluorescent.
 Streak:
white
More details...