Definition of chert
:a rock resembling flint and consisting essentially of a large amount of fibrous chalcedony with smaller amounts of cryptocrystalline quartz and amorphous silica
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For instance, the Mars 2020 fossil hunters will look for chert and silica—two types of minerals that, on Earth, are ideal for entombing and preserving biological material.
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Origin and Etymology of chert
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See words that rhyme with chert Britannica.com: Encyclopedia article about chert
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