Potassium (pronounced /pEmEtAbsiEm/ po-TAS-ee-Em) is the chemical element with the symbol K (Latin: kalium, from Arabic: UUUUUOs al-qalyah aplant ashesa cf. Alkali from the ... As such, it is found dissolved in seawater, and as part of many minerals. Potassium ... Occurrence. Elemental potassium does not occur in nature because it reacts violently with water (see section Precautions below). ... Figure 14: Potassium in feldspar Kilogram quantities of potassium cost far more, in the range.