Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Mineral matter in a vein exclusive of the ore; gangue.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. gangue

from the GNU version of the Collaborative International Dictionary of English

  • n. The valueless nonmetalliferous mineral or rock material which surrounds the ores in a vein, as quartz, calcite, barite, fluor spar, etc.; gangue; matrix; -- called also veinstuff.

from The Century Dictionary and Cyclopedia

  • n. The earthy or nonmetalliferous part of a lode, vein, or ore-deposit. See gangue.
  • n. A concretion formed within a vein; a phlebolite.

Etymologies

vein +‎ stone (Wiktionary)

Examples

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