Fluor-buergerite
Na(Fe³⁺₃)Al₆(Si₆O₁₈)(BO₃)₃O₃F
Tourmaline supergroup, cyclosilicate mineral
Properties
- Chemical formula
- Na(Fe³⁺₃)Al₆(Si₆O₁₈)(BO₃)₃O₃F
- Group
- Silicates
- Crystal system
- Trigonal
- Hardness (Mohs)
- —
- Color
- Brown
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- R3m
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.CK.05
- Dana classification
- 61.3.1.5
- IMA status
- Redefined mineral (Rd)
- IMA symbol
- Fbu
- Locality
- —
- Type locality
- —
- Discovery year
- —
Etymology
Named after fluorine
Source: Wikidata
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