from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Containing quartz.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Yielding or containing quartz.
from the GNU version of the Collaborative International Dictionary of English
- adj. Consisting chiefly of quartz; containing quartz.
from The Century Dictionary and Cyclopedia
- Consisting of quartz, or chiefly of quartz; containing quartz.
quartz + -iferous (Wiktionary)