anortoklaz
The mineral anorthoclase ((Na,K)AlSi3O8) is a crystalline solid solution in the alkali feldspar series, in which the proportion of the sodium-aluminium silicate member exceeds the potassium-aluminium silicate member. It typically consists of between 64 and 90 percent of NaAlSi3O8 and between 10 and 36 percent of KAlSi3O8. thumb|left|upright|An anorthoclase crystal from Mount Erebus, Antarctica
Key facts
- Mineral.name
- Anorthoclase
- Mineral.image
- Anorthoclase-tn23a.jpg
- Mineral.caption
- Doubly terminated anorthoclase crystal from Kinki Region, Honshu, Japan. Size:
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Feldspar group
- Mineral.series
- Alkali feldspar series
- Mineral.formula
- (Na,K)AlSi3O8
- Mineral.IMAsymbol
- Ano
- Mineral.IMAstatus
- Variety of albite
- Mineral.strunz
- 9.FA.30
- Mineral.dana
- 76.1.1.6
- Mineral.system
- Triclinic