... potassium, sodium, calcium, magnesium, phosphorus, iron and zinc elements and so on Maifanite is a natural drug ore. It ... contents potassium, sodium, calcium, magnesium, phosphorus, iron and zinc elements, selenium, copper, strontium, iodine, fluorine, silicic ... trace elements, that can be used for water purification, sewage treatment, and the bacteria with strong adsorption.chemical properties: ...