from The Century Dictionary.

  • noun A variety of rhodonite or manganese silicate, occurring at Cummington, Massachusetts.
  • noun An iron-magnesia variety of amphibole from the same locality.

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

  • noun mineralogy A mineral, magnesium-iron silicate hydroxide, (Mg,Fe)7Si8O22(OH)2.


from Wiktionary, Creative Commons Attribution/Share-Alike License

Cummington +‎ -ite, since it was originally discovered in Cummington, Massachusetts.


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  • a felicitously-named mineral first found in Cummington, Massachusetts.

    January 12, 2009

  • Who is the 3rd anonymous Wordie on whose list this allegedly appears?

    March 4, 2009

  • sionnach, I found the answer!

    April 7, 2009

  • *is super-impressed by Pro's detective skills*

    April 7, 2009

  • Ditto!

    April 7, 2009

  • Pretty.

    November 2, 2015