The Collaborative International Dictionary
Miascite
Miascite \Mi*asc"ite\, n. [Named from Miask, in the Ural Mountains.] (Min.) A granitoid rock containing feldspar, biotite, el[ae]olite, and sodalite.
Wiktionary
miascite
n. (context mineralogy English) A granitoid rock containing feldspar, biotite, elæolite, and sodalite.