from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A saline evaporite, consisting of a mixed potassium and magnesium sulphate, with the chemical formula K2Mg(SO4)2·6(H2O).

from The Century Dictionary and Cyclopedia

  • n. A hydrous sulphate of magnesium and potassium, obtained in monoclinic crystals and in crystalline crusts at the salt-mines of Stassfurt in Prussia.


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