Telluric /(?)/

Tel·lu·ric

Telluric

a.
  1. Of or pertaining to the earth; proceeding from the earth.
    Amid these hot, telluric flames.
  2. Of or pertaining to tellurium; derived from, or resembling, tellurium; specifically, designating those compounds in which the element has a higher valence as contrasted with tellurous compounds; as, telluric acid, which is analogous to sulphuric acid. (Chem.)

Phrases & Compounds
Telluric bismuth
tetradymite.
Telluric silver
hessite.