General Information:
Chemical Formula:
Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4
Composition:
(Molecular Weight = 1,114.18 gm)
Lithium 1.40 % Li
Calcium 3.60 % Ca
Aluminum 16.35 % Al
Silicon 15.12 % Si
Boron 5.82 % B
Hydrogen 0.14 % H
Oxygen 56.72 % O
Fluorine 0.85 % F
Empirical Formula:
CaLi2.25Al6.75BO33Si6O20(OH)1.5F0.5
IMA Status:
Approved IMA 1977
Physical Properties:
Cleavage:
None
Color:
blue, brown, green, pink, or red.
Density:
3.02
Diaphaniety:
Transparent to Subtranslucent
Hardness:
7.5 - Garnet
Luster:
Vitreous (Glassy)
Streak:
white
More details...