Definition of sylvite in English:



  • [mass noun] A colourless or white mineral consisting of potassium chloride, occurring typically as cubic crystals.

    • ‘The most common minerals of chlorine are halite, or rock salt, sylvite, and carnallite.’
    • ‘In association with our work with the American Chemical Society, we have developed a field procedure for distinguishing halite from sylvite.’
    • ‘Potassium salts, such as sylvite (potassium chloride) are used to produce fertilizers for the agricultural industry, while boron salts, especially borax, are a basic resource for the glass industry.’
    • ‘A bitter taste and squeaking under a rotating knife-point indicate that some of the red layers contain sylvite.’
    • ‘There are many other minerals, such as potash (sylvite, potassium chloride), that can form under certain evaporating conditions, especially in inland salt lakes.’


Mid 19th century: from modern Latin ( sal digestivus) Sylvii, the old name of this salt, + -ite.