Jeremejevite

General Information:
 Chemical Formula:
Al6B5O15(F,OH)3
 Composition:
(Molecular Weight = 511.93 gm)
Aluminum 31.62 % Al
Boron 10.56 % B 
Hydrogen 0.10 % H 
Oxygen 48.44 % O 
Fluorine 9.28 % F 
 Empirical Formula:
Al6B5O15F2.5(OH)0.5
 Environment:
Granitic pegmatites.
 Locality:
Soktujberg, Adun-Tchilon and Baikal, Russia.
 Name Origin:
Named after the Russian mineralogist, P. V. Jeremejev (1820-1899).
Physical Properties:
 Cleavage:
None
 Color:
colorless, white, yellowish white, or bluish white.
 Density:
3.28 - 3.31, Average = 3.29
 Diaphaniety:
Transparent
 Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).,
 Hardness:
7 - Quartz
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
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