cherty

/ˈtʃɜːrti/
adjective
  1. Containing or resembling chert, a hard, dark, sedimentary rock similar to flint.
    • The soil in this area is cherty and difficult to dig.
    • The path was covered with cherty gravel that sparkled in the sun.
    • Geologists found a cherty layer in the cliff face.
Synonyms
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