analcimite
noun
anal·ci·mite
-səˌmīt
plural -s
1
: a rock occurring in the Cyclades that originally was probably a nephelite-syenite but is now altered and contains over 50 percent of analcime
2
: analcitite
Word History
Etymology
Italian, from analcimo analcime (from French analcime) + -ite
First Known Use
1855, in the meaning defined at sense 1