anorthosite
/əˈnɔːθəsʌɪt
/noun [mass noun] Geology
A granular igneous rock composed largely of labradorite or another plagioclase.Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite....
- Coarse-grained anorthosite is the predominant rock type in these bodies.
- The plagioclase crystals would have formed subcircular lenses of anorthosite that punctuated background chromite accumulation.
Origin
Mid 19th century: from French anorthose 'plagioclase' + -ite1.
- northness
- north-north-east
- north-north-easterly
- north-north-eastward
- north-north-eastwards
- north-north-west
- north-north-westerly
- north-north-westward
- north-north-westwards
- North-of-England
- north of the Bombay Hills
- north of Watford
- North, Oliver
- North Ossetia
- North Oxford
- northpaw
- North Platte
- North Platte River
- north polar
- North Providence
- North Rhine-Westphalia
- North Ronaldsay
- North Sea
- North Sea gas
- North Sea oil