Basanite

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This word is acceptable for play in the UK dictionary that is being used in the following games:

Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. A basaltic extrusive rock, similar to chert
  • the GNU version of the Collaborative International Dictionary of English
  • n. Lydian stone, or black jasper, a variety of siliceous or flinty slate, of a grayish or bluish black color. It is employed to test the purity of gold, the amount of alloy being indicated by the color left on the stone when rubbed by the metal.
  • The Century Dictionary and Cyclopedia
  • n. A silicious rock or jasper, of a velvety-black color, used as a touchstone for determining the amount of alloy in gold. The touchstone was formerly extensively used, but is now much less common. See touchstone and touch-needle.
  • Synonym
    Words with the same meaning
    lydite