from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A complex cubic sulfosalt mineral of silver, copper, iron, antimony, and arsenic.
from The Century Dictionary and Cyclopedia
- n. A variety of tetrahedrite containing several per cent. of silver: named from Freiberg in Saxony.
Freiberg, Saxony, where it was found in silver mines, + -ite. (Wiktionary)