pyritical

/paɪˈrɪtɪkəl/
adjective
  1. Relating to or resembling pyrite; having the properties of pyrite.
    • Some old mine tunnels have a pyritical coating on the walls.
    • The geologist described the sample as pyritical, meaning it was rich in fool's gold.
    • The pyritical luster of the mineral made it easy to spot in the gravel.
Synonyms