chert

(c̸hʉrt)

noun

an extremely dense type of quartz, including jasper and flint, having a dull, opaque luster and made up of microscopic crystals

Origin: < ?

Related Forms:

See chert in American Heritage Dictionary 4

noun
  1. A variety of silica that contains microcrystalline quartz.
  2. A siliceous rock of chalcedonic or opaline silica occurring in limestone.

Origin:

Origin: Origin unknown

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Related Forms:

  • chertˈy adjective

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chert

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