General Information:
Chemical Formula:
NaCaB5O6(OH)6·5(H2O)
Composition:
(Molecular Weight = 405.23 gm)
Sodium 5.67 % Na
Calcium 9.89 % Ca
Boron 13.34 % B
Hydrogen 3.98 % H
Oxygen 67.12 % O
Empirical Formula:
NaCaB5O6(OH)6·5(H2O)
Name Origin:
Named after the German chemist, George Ludwig Ulex (1811-1883).
Physical Properties:
Cleavage:
[010] Perfect, [110] Perfect
Color:
colorless or white.
Density:
1.95 - 1.96, Average = 1.95
Diaphaniety:
Translucent
Habits:
Acicular - Occurs as needle-like crystals., Fibrous - Crystals made up of fibers., Capillary - Very slender and long, like a thread or hair (e.g. millerite).
Hardness:
2.5 - Finger Nail
Luminescence:
None.
Luster:
Chatoyant
Streak:
white
More details...