Definition of carnallite in US English:



  • A white or reddish mineral consisting of a hydrated chloride of potassium and magnesium.

    • ‘Magnesium is found in seawater and as the mineral carnallite, a combination of potassium chloride and magnesium chloride, at the Stassfurt Mine in Germany.’
    • ‘The most common minerals of chlorine are halite, or rock salt, sylvite, and carnallite.’
    • ‘Its most common ores are lepidolite, carnallite, and pollucite.’
    • ‘The residue from the solution of the raw carnallite consists largely of kieserite mud C ~ IgS04.’
    • ‘The crystal is actually a mixture of carnallite and salt with the proportions varying according to evaporation conditions and the stage of the evaporation process.’
    • ‘The extraction of salt and carnallite from the ponds will be done via heavy machines named Harvesters.’


Mid 19th century: named after Rudolf von Carnall (1804–74), German mining engineer, + -ite.