Polyhalite is a mineral that is found in evaporite deposits and is an important source of potassium and sulfur. This mineral is also known by several synonyms, including Bischofite, Kalimag, Kainotrite, and Huixianite. Each of these synonyms refers to a different aspect of Polyhalite's composition or origin. Bischofite is named after the German geologist, Karl Bischof, who discovered the mineral in 1878. Kalimag and Kainotrite are derived from the Greek words for potassium and new stone, respectively. Huixianite is named after the Huixian mine in China where the mineral was first discovered. These synonyms are often used interchangeably with Polyhalite in scientific literature and research.