Definition of anorthosite in English:
anorthosite
nounəˈnɔːθəsʌɪtəˈnôrTHəˌsīt
mass nounGeology A granular igneous rock composed largely of labradorite or another plagioclase.
Example sentencesExamples
- The plagioclase crystals would have formed subcircular lenses of anorthosite that punctuated background chromite accumulation.
- Coarse-grained anorthosite is the predominant rock type in these bodies.
- Because of the preponderance of the mineral anorthite (a calcium-rich variety of the mineral plagioclase feldspar) this rock type is called anorthosite.
- Wood's second audacious - and completely unsubstantiated - claim was that all the lunar highlands were made of the rock anorthosite.
- An area that contains over 90% anorthosite is currently being quarried near the preserve.
Origin
Mid 19th century: from French anorthose 'plagioclase' + -ite1.