What does "kainite" mean?

An evaporite, consisting of magnesium sulphate and potassium chloride with the chemical formula MgSO₄·KCl·3H₂O, found in German salt mines.

Kainite

Common synonyms include: evaporite mineral, fertilizer mineral, mineral commodity, potash source, potassium salt, sulfate mineral.

noun

noun ·Rare ·Advanced level

Noun

1
An evaporite, consisting of magnesium sulphate and potassium chloride with the chemical formula MgSO₄·KCl·3H₂O, found in German salt mines. countable, uncountable
2
a white mineral consisting of magnesium sulphate and potassium chloride; a source of potassium salts; used as a fertilizer wordnet

Borrowed from German Kainit; see there for more.