sunstone
Also known as aventurine feldspar
Sunstone is a microcline or oligoclase feldspar, which when viewed from certain directions exhibits a spangled appearance. It has been found in Southern Norway, Sweden, various localities in the United States, and on some beaches along the midcoast of South Australia.
Key facts
- Mineral.name
- Sunstone
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Feldspar group
- Mineral.series
- Alkali feldspar series
- Mineral.IMAstatus
- Variety of microcline or oligoclase
- Mineral.boxbgcolor
- f1ae9a
- Mineral.image
- sunstone1.jpg
- Mineral.imagesize
- 260px
- Mineral.formula
- (Ca,Na)((Al,Si)SiO)
- Mineral.color
- Colorless, orange, yellow, red, green, blue, brown, and copper shiller
- Mineral.habit
- Euhedral crystals, granular
- Mineral.system
- Triclinic
Article
8 sectionsContents
- Properties
- Physical properties
- Distribution
- Oregon sunstone
- Andesine controversy
- See also
- References
- External links
Sunstone is a microcline or oligoclase feldspar, which when viewed from certain directions exhibits a spangled appearance. It has been found in Southern Norway, Sweden, various localities in the United States, and on some beaches along the midcoast of South Australia.
==Properties== === Physical properties === thumb|left|Unpolished sunstone thumb|left|A small rolled sunstone