Kaliborite

General Information:
 Chemical Formula:
KHMg2B12O16(OH)10·4(H2O)
 Composition:
(Molecular Weight = 716.56 gm)
Potassium 5.46 % K 
Magnesium 6.78 % Mg
Boron 18.10 % B 
Hydrogen 2.67 % H 
Oxygen 66.98 % O 
 Empirical Formula:
KHMg2B12O16(OH)10·4(H2O)
Physical Properties:
 Cleavage:
[001] Perfect, [101] Perfect, [100] Good
 Color:
colorless, gray white, white, or reddish brown.
 Density:
2.116
 Diaphaniety:
Transparent
 Hardness:
4-4.5 - Between Fluorite and Apatite
 Luster:
Vitreous (Glassy)
 Streak:
white
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