Mn sand manganese sand (1) MnO2 30% -80% finess :0.5-1mm,1-2mm,2-4mm,4-8mm SiO2 15-17% ,Fe 5-8%. (2)manganese sandIt can be used in water treatment .quantity :1000MT/monthpayment terms :L/C T/Tpacking :50Kg woven bags or on request .spec: MnO2 30% -80% finess :0.5-1mm,1-2mm,2-4mm,4-8mm SiO2 15-17% ,Fe 5-8%.