Fabianite is a borate mineral with the chemical formula CaB3O5(OH). It is a monoclinic-prismatic colorless mineral containing boron, calcium, hydrogen, and oxygen. It was named for Hans-Joachim Fabian, a German geologist. It is not radioactive.
General Information
- Category: Phylloborates
- Formula: CaB3O5(OH)
- Crystal system: Monoclinic
- Crystal class: Prismatic (2/m)
Properties
It is colorless and leaves a white streak. Its crystals are monoclinic prismatic. It is transparent and fluorescent. It has a vitreous luster. It is not radioactive. Fabianite is rated 6 on the Mohs Scale.
- Cleavage:{011} Indistinct
- Color: Colorless.
- Density: 2.77
- Diaphaneity: Transparent
- Hardness: 6 – Orthoclase
- Luminescence: Fluorescent, Short UV=brownish yellow, Long UV=brownish yellow.
- Luster: Vitreous (Glassy)
- Streak: white
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Occurrence: In a marine evaporite deposit.
Association: Halite, anhydrite, howlite, szaib´elyite.
Information Source:
