from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A soft monoclinic hydrated magnesium carbonate mineral.

from The Century Dictionary and Cyclopedia

  • n. A hydrous carbonate of magnesium occurring in stalactitic forms in a coalmine at Lansford in Pennsylvania.


Lansford +‎ -ite, after the place in Pennsylvania where it was discovered. (Wiktionary)


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