chert

• Hartes, dichtes Sedimentgestein, das überwiegend aus mikrokristallinem Quarz besteht; eine Varietät des Siliziumdioxids. Wird auch als Feuerstein oder Hornstein bezeichnet.

A hard, dense, sedimentary rock composed of microcrystalline quartz, a variety of silica.

unzählbar

1. Microcrystalline quartz rockC1formalscientific

   A hard, dense sedimentary rock composed of microcrystalline quartz, often found in nodules or layers within limestone.

   Hornstein

   • The geologist identified the sample as chert due to its conchoidal fracture.
   • Ancient toolmakers used chert to create sharp-edged blades and arrowheads.
   • Chert nodules are commonly found embedded in chalk deposits.

   Synonymeflint