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Related articles:
Flint
Agate
Chalcedony
Opal
Chalk
Jasper
Limestone
Stone tool
Onyx
Quartzite
Key terms: chert flint variety rock term forms tool iron occurs formations beds force type quartz opal chalk chalcedony green cone fossils contain jasper layers preserves banded silica color silex agate primary mineral deposits fracture struck lithic quality material fig tree variety of chert siliceous common chert characteristic precambrian replacement sedimentary construction limestone formations cryptocrystalline diatomaceous chert varieties of chert Search external links cited by footnotes on Wikipedia page Chert: |
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