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anorthosite

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anorthosite

Type of igneous rock composed predominantly of calcium-rich feldspar. It is considerably less abundant than either basalt or granite, but the complexes in which it occurs are often immense. All anorthosites found on the earth consist of coarse crystals, but some from the moon are finely crystalline.

anorthosite [ə′nȯr·thə‚sīt]
(petrology)
A visibly crystalline plutonic rock composed almost entirely of plagioclase feldspar (andesine to anorthite) with minor amounts of pyroxene and olivine.
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Just like the rocks on Earth, Moon's have lots of basalt and olivine, pyroxene, and mafic breccias, along with plagioclase feldspar, also known as anorthosite.
Luna slowly yields her secrets by Telegram & Gazette (Worcester, MA)
His company plans to extract 150,000 tons of anorthosite a year from a trio of parcels spanning five acres in a total claim of 320 acres within the Angeles National Forest.
MINI-SOLEDAD MINE ON TABLE FOREST SERVICE NEGOTIATING DEAL; CITY ... by Daily News (Los Angeles, CA)
New Metalcasting Sands The use of this technology has been assessed with two minerals, anorthosite (a calcium alumino-silicate) and jotunite (an iron-rich basalt).
Moving away from silica sand by Harris, Kenneth P. / Modern Casting
 
 
 
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