Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Wikimedia Commons
Meionite
(Ca,Na)₄(Si,Al)₁₂O₂₄(CO₃,SO₄,Cl)
Tectosilicate mineral
Properties
- Chemical formula
- (Ca,Na)₄(Si,Al)₁₂O₂₄(CO₃,SO₄,Cl)
- Group
- Silicates
- Crystal system
- —
- Hardness (Mohs)
- —
- Color
- Colorless
- Luster
- —
- Streak
- White
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- —
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.FB.15
- Dana classification
- —
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Me
- Locality
- 🇮🇹 Mount Somma
- Type locality
- —
- Discovery year
- —
Etymology
Named after less
Source: Wikidata
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