General Information:
Chemical Formula:
(Mg,Fe++)3B7O13Cl
Composition:
(Molecular Weight = 415.69 gm)
Magnesium 13.16 % Mg
Iron 10.08 % Fe
Boron 18.20 % B
Chlorine 8.53 % Cl
Oxygen 50.04 % O
Empirical Formula:
Mg2.25Fe2+0.75B7O13Cl
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
None
Color:
colorless or light blue.
Density:
2.84 - 3.34, Average = 3.09
Diaphaniety:
Transparent
Hardness:
6-8
Luster:
Vitreous (Glassy)
Streak:
white
More details...