Rubbers And Plastics,Precipitated Silica As Rubber Filler,Powders And Granulates To Flow Freely,Prevent Caking With Long Storage Time Henan Minmetals East New Materials CO. LTD. , https://www.eastmaterials.com Mineral name In content, % Hematite ore >0.1 can be used as indium ore alone Cassiterite copper-containing lead and zinc ores wolframite 0.01~0.03 Sphalerite ore 0.0001~0.1 Copper molybdenum ore 0.001~0.003 Stibnite ore 0.002~0.004 Sulphides ores 0.0005~0.001 Zinc-containing pyrite sulfide ore 0.001~0.03