carnallite Meaning, Definition & Usage

  1. noun a white or reddish mineral consisting of hydrous chlorides of potassium and magnesium; used as a fertilizer and as a source of potassium and magnesium

WordNet

Car"nal*lite noun
Etymology
G. carnallit, fr. Von Carnall, a Prussian.
Definitions
  1. (Min.) A hydrous chloride of potassium and magnesium, sometimes found associated with deposits of rock salt.

Webster 1913