from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An isometric-hexoctahedral mineral containing antimony and oxygen.
from The Century Dictionary and Cyclopedia
- n. Native antimony trioxid (Sb2O3), occurring in isometric octahedrons, also massive: it is colorless or grayish, of a resinous to subadamantine luster.
Antimony oxides, including senarmontite, cervantite, and others, are formed near the surface, and in some of the deposits of Mexico and Algeria they supply a large part of the values recovered.