Chert meaning

chûrt
A variety of silica that contains microcrystalline quartz.
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A siliceous rock of chalcedonic or opaline silica occurring in limestone.
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An extremely dense type of quartz, including jasper and flint, having a dull, opaque luster and made up of microscopic crystals.
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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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(geology, uncountable) Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.
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(countable) A flint-like tool made from chert.
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Origin of chert

  • Origin unknown

    From American Heritage Dictionary of the English Language, 5th Edition

  • Unknown.

    From Wiktionary