General Information:
Chemical Formula:
Ca4B10O19·20(H2O)
Composition:
(Molecular Weight = 932.71 gm)
Calcium 17.19 % Ca
Boron 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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