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Bromellite
From Wikipedia, the free encyclopedia
Bromellite, whose name derives from the Swedish chemist Magnus von Bromell (1670–1731), is a white oxide mineral. The mineral form of beryllium oxide, it is found in complex pegmatitic manganese-iron deposits, but is more frequently made synthetically. This is a rare mineral to encounter in its natural state, but it has been made synthetically for over 40 years.
Quick Facts General, Category ...
Bromellite | |
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![]() A yellowish crystal of bromellite | |
General | |
Category | Oxide minerals |
Formula (repeating unit) | BeO (beryllium oxide) |
Strunz classification | 4.AB.20 |
Crystal system | Hexagonal |
Crystal class | Dihexagonal pyramidal (6mm) H-M symbol: (6mm) |
Space group | P63mc |
Identification | |
Color | White, colorless |
Crystal habit | prismatic |
Cleavage | [1010] Distinct |
Mohs scale hardness | 9 |
Luster | Vitreous |
Streak | White |
Diaphaneity | Transparent to translucent |
Specific gravity | 3.02 |
Refractive index | 1.719, 1.733 |
Pleochroism | None |
Melting point | 2,570 °C (4,660 °F) |
References | [1] |
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