Radium and Arsenic Removing Greensand is a black filter medium used for eliminating soluble iron, manganese and hydrogen sulphide from well water supplies. Greensand is processed from the mineral zeolite that is a light weight granular core with a manganese dioxide coating is deposited on the surface of the mineral grains. Greensand also has the capability of removing radium and arsenic. Radium and Arsenic Removing Greensand contains manganese dioxide coating that acts as a catalyst in the oxidation reduction reaction of iron and manganese.
