Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Burkhard Mücke · CC BY-SA 4.0
Andradite
Ca₃Fe³⁺₂(SiO₄)₃
Garnet, nesosilicate mineral
Properties
- Chemical formula
- Ca₃Fe³⁺₂(SiO₄)₃
- Group
- Silicates
- Crystal system
- Cubic
- Hardness (Mohs)
- —
- Color
- Yellow
- Luster
- —
- Streak
- White
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- —
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.AD.25
- Dana classification
- 51.4.3b.1
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Adr
- Locality
- 🇳🇴 Drammen
- Type locality
- —
- Discovery year
- —
Etymology
Named after José Bonifácio de Andrada e Silva
Source: Wikidata
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