Fabianite

Fabianite is a borate mineral with the chemical formula CaB₃O₅(OH). It is colorless and leaves a white streak. Its crystals are monoclinic prismatic. It is transparent and fluorescent. It has vitreous luster. It is not radioactive. Fabianite is rated 6 on the Mohs Scale.

[edit] References

Webmineral Entry
Mineral Handbook
J. A. Konnert, J. R. Clark and C. L. Christ (1970). "Crystal structure of fabianite, CaB30S(OH), and comparison with the structure of its synthetic dimorph". Zeitschrift für Kristallographie 132: 241–254.
Richard C. Erd, G. Donald Eberlein, and C. L. Christ (1969). "Fabianite and its synthetic dimorph, CaB 3 O 5 (OH); new data". The Canadian Mineralogist 10 (1): 108–112.