noun
- A mineral consisting of a hydrated sulfate of potassium and magnesium, used as a source of potassium in fertilizers.
Usage: technical; mineralogy
Examples
- Kainite is mined in several countries for use in agricultural fertilizers.
- The chemical composition of kainite makes it valuable in potassium production.
- Deposits of kainite are found in evaporite formations around the world.
- Farmers sometimes use kainite-based fertilizers to improve soil nutrient content.