Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Wikimedia Commons
Rubicline
Rb(AlSi₃O₈)
Feldspar, tectosilicate mineral
Properties
- Chemical formula
- Rb(AlSi₃O₈)
- Group
- Silicates
- Crystal system
- Triclinic
- Hardness (Mohs)
- —
- Color
- Colorless
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- triclinic-pedial
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.FA.30
- Dana classification
- 76.1.1.7
- IMA status
- Approved mineral and/or valid name (A)
- IMA symbol
- Rub
- Locality
- 🇮🇹 San Piero in Campo
- Type locality
- —
- Discovery year
- —
Etymology
Named after rubidium
Source: Wikidata
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