Definitions

from The Century Dictionary.

  • noun 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geology An igneous, plutonic rock composed mainly of plagioclase
  • noun geology, dated Quartz diorite.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Tonale +‎ -ite

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