Definition of kieserite in US English:



  • A fine-grained white mineral consisting of hydrated magnesium sulfate, occurring often in salt mines in Europe and India.

    • ‘Translucent crystalline mass of kieserite with white alteration products.’
    • ‘Crystal chemical aspects of the Mg-sulfate hydrate mineral kieserite, which has been identified on the Martian surface.’
    • ‘Bish and his Los Alamos colleagues believe that the proportion and distribution of hexahydrite, kieserite and other magnesium sulfate salts on Mars may hold a record of past changes in climate and whether or not water once flowed there.’


Mid 19th century: from the name of Dietrich G. Kieser (1779–1862), German physician, + -ite.