Hello, we are representatives for some Manganese Ore suppliers in Brazil. Our clients can provide as low as 500t and as much as 30,000t per month, with the following characteristcs: Mn: 40% Minimum Fe: SiO2: 10% max S: 0.04% max P: 0.3% max Humidity: 9% max Lump size: 8 - 120mm 90% min