anorthite
/əˈnɔːθʌɪt
/noun [mass noun]
A calcium-rich mineral of the feldspar group, typically white, occurring in many basic igneous rocks.Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite....
- Late phases are mainly calcic amphiboles of magnesio-hornblende composition and plagioclases with very low anorthite contents.
- The relative effect of anorthite on predicted melt compositions is indicated.
Origin
Mid 19th century: from an-1 + Greek orthos 'straight' + -ite1.
- running trap
- running vest
- running water
- runny
- Runnymede
- runo
- run off
- run-off
- run off at the mouth
- run off with
- run-of-river
- run-of-the-mill
- runographic
- runological
- runologist
- runology
- run on
- run oneself into the ground
- run one's mouth
- run (or come down) a banker
- run (or make) rings round (or around) someone
- run (or take) its course
- run (or take) the risk (or risks)
- run out
- run-out groove