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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