Definition of andesite
: an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar
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Recent Examples of andesite from the Web
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NASA scientists said the Sojourner rover’s first close-up inspection of a Martian rock produced a surprise: the quartz-heavy object resembled andesite, a common volcanic rock found on Earth.
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Origin and Etymology of andesite
German Andesit, from Andes
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See words that rhyme with andesite Britannica.com: Encyclopedia article about andesite
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