carnallite
/ˈkɑːrnəlaɪt/
noun
- A white or reddish mineral consisting of a chloride of potassium and magnesium, used as a source of potash and in fertilizers.
- The geologist identified the pinkish crystals as carnallite from the salt deposit.
- Carnallite is mined in several parts of the world for its potassium content.
- Farmers use fertilizers made from carnallite to enrich the soil with potassium.