from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A calcium magnesium aluminium phyllosilicate mineral of the margarite group of micas.
from The Century Dictionary and Cyclopedia
- n. A micaceous mineral of a reddish-brown to copper-red color, occurring in brittle foliated masses at Amity in New York. Also called seybertite.
- Of or pertaining to the Clinton group (which see, under group).
Clinton + -ite (Wiktionary)