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chert
[ churt ]
noun
- a compact rock consisting essentially of microcrystalline quartz.
chert
/ tʃɜːt /
noun
- a microcrystalline form of silica usually occurring as bands or layers of pebbles in sedimentary rock. Formula: SiO 2 . Varieties include flint, lyddite (Lydian stone) Also calledhornstone
chert
/ chûrt /
- A hard, brittle sedimentary rock consisting of microcrystalline quartz. It is often reddish-brown to green but can also occur in a variety of other colors, especially white, pink, brown, or black. Chert often contains impurities such as calcium, iron-oxide, or the remains of silica-rich organisms. It usually occurs as nodules in limestone and dolomite and has curved fractures.
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Derived Forms
- ˈcherty, adjective
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Other Words From
- cherty adjective
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Word History and Origins
Origin of chert1
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Word History and Origins
Origin of chert1
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Example Sentences
And because the place where they made fires was found, these mountains are called Aw-up Chert-taw to this day.
Most examples from this area are made from Ft. Payne chert, which is usually patinated to a chocolate brown color.
Points were made from Ft. Payne chert, Bangor nodular flint, jasper or other local materials.
Some examples made of Ft. Payne chert show considerable patination.
Most examples are made of Ft. Payne chert but other local materials were also used.
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