from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An igneous, plutonic rock composed mainly of plagioclase
- n. Quartz diorite.
from The Century Dictionary and Cyclopedia
- n. A name proposed by Vom Rath for a variety of quartz diorite especially rich in biotite: it is largely developed near Tonale on the borders of Tyrol.
Tonale + -ite (Wiktionary)