babefphite
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Babefphite is a rare phosphate mineral with the general formula BaBe(PO4)(F,OH). The name is given for its composition (Ba meaning barium, Be meaning beryllium, F meaning fluorine, and P for phosphorus).
Key facts
- Mineral.name
- Babefphite
- Mineral.category
- Phosphate mineral
- Mineral.formula
- BaBe(PO4)(F,OH)
- Mineral.IMAsymbol
- Bbf
- Mineral.strunz
- 8.BA.15
- Mineral.system
- Triclinic
- Mineral.class
- Pedial (1) (same H-M symbol)
- Mineral.symmetry
- F1
- Mineral.unit cell
- a = 6.889 Å, b = 16.814 Å, c = 6.902 Å; α = 90.01°, β = 89.99°, γ = 90.32°; Z = 8
- Mineral.color
- White
- Mineral.habit
- As anhedral, equant to flattened grains, to 1.5 mm; may be in aggregates, (pseudotetragonal)
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 3.5
- Mineral.luster
- Vitreous
- Mineral.refractive
- nω = 1.629 nε = 1.632
- Mineral.opticalprop
- Uniaxial (+) – biaxial positive (pseudouniaxial)
- Mineral.birefringence
- 0.003
- Mineral.streak
- White
via Wikipedia infobox
Wikidata facts
Show 5 more facts
- chemical formula
- BaBePO₄F
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.BA.15
- Nickel-Strunz 9th edition (updated 2009)
- 8.BA.15
- Strunz 8th edition (series ID, updated)
- VII/B.01
- IMA Mineral Symbol
- Bbf
Sources (1)
via Wikidata · CC0
~3 min read
Article
4 sectionsContents
- Crystallography
- Optical properties
- Occurrence
- References
Babefphite is a rare phosphate mineral with the general formula BaBe(PO4)(F,OH). The name is given for its composition (Ba meaning barium, Be meaning beryllium, F meaning fluorine, and P for phosphorus).
==Crystallography== Babefphite is tetragonal, which means crystallographically, it contains two horizontal and interchangeable equal axes (a1 and 2) and a longitudinal axis (c). It belongs to the 4/m 2/m 2/m point group; meaning it has four horizontal axes of twofold symmetry, two of which coincide with the crystallographic axes (a1) and (a2) and the remaining two at 45° to the (a1) and (a2).