General Information:
Chemical Formula:Ca4B10O19·20(H2O)
Composition:(Molecular Weight = 932.71 gm)Calcium 17.19 %
CaBoron 11.59 %
B Hydrogen 4.32 %
H Oxygen 66.90 %
O Empirical Formula: Ca4B10O19·20(H2O)
Locality:Kurtpinari mine, Faras, Turkey.
Name Origin:Named for Herman Tertsch (1880-1962), Austrian mineralogist.
Physical Properties: Color:snow white.
Habits:Fibrous - Crystals made up of fibers., ,
Luminescence:Fluorescent, Short UV=blue violet.
Luster:Silky
Streak:white
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