Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Ivar Leidus · CC BY-SA 4.0
Elbaite
Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Cyclosilicate, mineral
Properties
- Chemical formula
- Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
- Group
- Silicates
- Crystal system
- Trigonal
- Hardness (Mohs)
- —
- Color
- Green
- Luster
- —
- Streak
- White
- 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
- 61.3.1.8
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Elb
- Locality
- 🇮🇹 San Piero in Campo
- Type locality
- —
- Discovery year
- —
Etymology
Named after Elba
Source: Wikidata
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