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carnallite

[ kahr-nl-ahyt ]

noun

, Mineralogy.
  1. a white hydrous chloride of potassium and magnesium, KMgCl 3 ⋅6H 2 O, used chiefly as a source of potassium and magnesium.


carnallite

/ ˈkɑːnəˌlaɪt /

noun

  1. a white or sometimes coloured mineral consisting of a hydrated chloride of potassium and magnesium in orthorhombic crystalline form: a source of potassium and also used as a fertilizer. Formula: KCl.MgCl 2 .6H 2 O
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of carnallite1

1875–85; named after R. von Carnall (1804–74), German mining official; -ite 1
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Word History and Origins

Origin of carnallite1

C19: named after Rudolf von Carnall (1804–74), German mining engineer; see -ite 1
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Example Sentences

It is also formed as a by-product in the manufacture of potassium chloride from carnallite.

It is obtained as a by-product in the manufacture of potassium chloride from carnallite.

It is prepared from carnallite by saturating boiling water with the mineral and allowing the solution to cool.

Carnallite contains nearly a fourth of its weight of potassium chloride.

This maximum point corresponds with the fact that dry carnallite melts at this temperature with separation of potassium chloride.

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