anorthosite
noun
an·or·tho·site
ə-ˈnȯr-thə-ˌsīt 
: a granular plutonic igneous rock composed almost exclusively of a soda-lime feldspar (such as labradorite)
Examples of anorthosite in a Sentence
Recent Examples on the Web
The discovery of anorthosite — an ancient type of rock formed from cooling molten lava — in the lunar highlands suggested that, early in its history, the Moon had vast magma oceans.
—
Anna Nordseth, Discover Magazine, 29 Oct. 2024
Off Planet’s recipes combine several rocks, including anorthosite and basalt.
—Matthew Hutson, The New Yorker, 24 Sep. 2024
The light-colored highlands are composed of anorthosite, an igneous rock believed to be the remains of the primordial crust of the Moon, and are dated to 4.5 to 3.9 billion years.
—David Bressan, Forbes, 10 Oct. 2021
At the moment, only two mines in Greenland are active, one producing rubies and the other anorthosite, used in paints, plastic coatings and special varieties of glass.
—New York Times, 1 Oct. 2021
Astronauts on Apollo 15 collected a 4 x 2-inch chunk of crystal anorthosite over 4 billion years old.
—Michael O’Donnell, WSJ, 2 July 2021
The chunks of anorthosite weren’t deposited there by nature — they were trucked in from the mountains around Pasadena.
—Los Angeles Times, 19 July 2019
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Anna Nordseth, Discover Magazine, 29 Oct. 2024
Off Planet’s recipes combine several rocks, including anorthosite and basalt.
—Matthew Hutson, The New Yorker, 24 Sep. 2024
The light-colored highlands are composed of anorthosite, an igneous rock believed to be the remains of the primordial crust of the Moon, and are dated to 4.5 to 3.9 billion years.
—David Bressan, Forbes, 10 Oct. 2021
At the moment, only two mines in Greenland are active, one producing rubies and the other anorthosite, used in paints, plastic coatings and special varieties of glass.
—New York Times, 1 Oct. 2021
Astronauts on Apollo 15 collected a 4 x 2-inch chunk of crystal anorthosite over 4 billion years old.
—Michael O’Donnell, WSJ, 2 July 2021
The chunks of anorthosite weren’t deposited there by nature — they were trucked in from the mountains around Pasadena.
—Los Angeles Times, 19 July 2019
Dictionary Entries Near anorthosite
Cite this Entry
“Anorthosite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anorthosite. Accessed 30 Dec. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share