Definitions

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.

Etymologies

Tonale +‎ -ite (Wiktionary)

Examples

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