General Information:
Chemical Formula:NaCaB5O6(OH)6·5(H2O)
Composition:(Molecular Weight = 405.23 gm)Sodium 5.67 %
NaCalcium 9.89 %
CaBoron 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
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