Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Wikimedia Commons
Mogánite
SiO₂·nH₂O
Silica mineral, rare monoclinic polymorph of quartz
Properties
- Chemical formula
- SiO₂·nH₂O
- Group
- Silicates
- Crystal system
- Monoclinic
- Hardness (Mohs)
- —
- Color
- —
- Luster
- —
- Streak
- White
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- —
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 4.DA.20
- Dana classification
- 75.1.4.2
- IMA status
- Renamed mineral (Rn)
- IMA symbol
- Mog
- Locality
- —
- Type locality
- —
- Discovery year
- —
Etymology
Named after Mogán
Source: Wikidata
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