A white, brownish, or reddish mineral, KMgCl3· 6H2 O, an ore of potassium, used to manufacture potash salts.
A hydrous chloride of magnesium and potassium, MgCl2KCl6H2O: a valuable source of potassium.
(mineralogy) A saline evaporite composed of a mixture of potassium chloride and magnesium chloride, with the chemical formula KMgCl3·6H2O.
Other Word Forms
Origin of carnallite
After Rudolf von Carnall (1804–1874), German mining engineer
American Heritage Dictionary of the English Language, 5th Edition
Carnallite Sentence Examples
The carnallite principally dissolves and crystallizes out relatively pure on cooling.
It is also formed as a by-product in the manufacture of potassium chloride from carnallite.
There is also deposited a double magnesium and potassium chloride, similar to the carnallite of Stassfurt, and finally the mother-liquor, which has now again risen to specific gravity 1.3374, contains only pure magnesium chloride.
The salt is commonly associated with gypsum, often also with anhydrite, and occasionally with sylvite, carnallite and other minerals containing potassium and magnesium.
The Stassfurt deposits are of special importance for the sake of the associated salts of potassium and magnesium, such as carnallite and kainite.