from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A variety of pyroxene; diopside.
from the GNU version of the Collaborative International Dictionary of English
- n. A variety of pyroxene, from the Mussa Alp in Piedmont; diopside.
from The Century Dictionary and Cyclopedia
- n. A variety of pyroxene of a greenish-white color. Also called alalite and, more commonly, diopside.
Mussa + -ite, since it comes from the Mussa Alp in Piedmont. (Wiktionary)