General Information:
Chemical Formula:
Mg3B7O13Cl
Composition:
(Molecular Weight = 392.03 gm)
Magnesium 18.60 % Mg
Boron 19.30 % B
Chlorine 9.04 % Cl
Oxygen 53.06 % O
Empirical Formula:
Mg3B7O13Cl
Environment:
Marine evaporites.
Locality:
Luneburg and Hildesheim, Germany.
Name Origin:
Named after its composition containing boron.
Physical Properties:
Cleavage:
None
Color:
blue green, colorless, gray, yellow, or white.
Density:
2.9
Diaphaniety:
Subtransparent to translucent
Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., Disseminated - Occurs in small, distinct particles dispersed in matrix.,
Hardness:
7 - Quartz
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Adamantine
Streak:
white
More details...