19 K Potassium alkali

Potassium

Atomic number 19

Symbol K

Category Alkali

Crystal system Cubic

4 minerals in the collection

Discovered : Humphry Davy, 1807. First metal isolated by electrolysis.

Found in : Sylvite, orthoclase feldspar, muscovite mica.

Used for : Fertilizers, soap production, food preservation, medicine.

Remarkable : Reacts explosively with water. Potassium-40, a natural radioactive isotope, contributes to background radiation in the human body.

Minerals containing Potassium

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