Potash accounts for 90% of all the potassium applied to farmland soil in the U.S. in the form of Muriate of Potash (MOP). Potash ore is mined from a half mile beneath the Earth’s surface with ...

Potash is a term that refers to compounds and minerals that contain potassium salts. It is naturally white or colorless, but ore sometimes takes on a pink or red color due to impurities such as clay.