We can supply high quality Manganese Carbonate tech. grade at competitive price. They are used in ceramic glaze field etc.. 1) Molecular Formula: MnCO3 2) CAS No.: 598-62-9 H.S.Code:283699903) Specification: Content(Mn) ≥ 44%; Sulphate(SO4) ≤ 0.6%; Chloride(Cl) ≤ 0.02%; Granularity, Residue through 45μm screen 4%. 4) Appearance: Light brown powder 5) Packing: in PP woven bag lined with with PE plastic bag. N.W.:25kg per bag. Your any specific inquiry will meet our prompt reply. Thanks a lot. Yours sincerely, Daisy