from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A saline evaporite, consisting of magnesium sulphate, also found in fumaroles, with the chemical formula MgSO4·7H2O.

from the GNU version of the Collaborative International Dictionary of English

  • n. Native sulphate of magnesia or Epsom salt.

from The Century Dictionary and Cyclopedia

  • n. Native Epsom salt, occasionally found as a delicate fibrous or capillary efflorescence on rocks, in the galleries of mines, upon the damp walls of cellars, etc. Also called hair-salt.
  • n. See stylolite.


Epsom +‎ -ite, named after the place Epsom in England in 1824.[2] (Wiktionary)



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