Ussingite
Na₂AlSi₃O₈(OH)
Transitional structure between phyllosilicate and other silicate unit, mineral
Properties
- Chemical formula
- Na₂AlSi₃O₈(OH)
- Group
- Silicates
- Crystal system
- Triclinic
- Hardness (Mohs)
- —
- Color
- Purple
- Luster
- —
- Streak
- White
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- triclinic-pedial
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.EH.20
- Dana classification
- 76.3.3.1
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Usg
- Locality
- 🇬🇱 Kangerluarsuk fjord, Ilímaussaq
- Type locality
- —
- Discovery year
- —
Etymology
Named after Niels Viggo Ussing
Source: Wikidata
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