The zinc content of mined ore is usually between 3 and 10 percent. Almost all ores contain the lead sulfide mineral galena and small quantities of cadmium sulfide.. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral.Specifications Size 1-50 Mm, 100-200 Mm, 200-300 Mm, 50-100 Mm Material Raw Zinc Shape Lump Oil Absobtion 5-7% Silver 0.01% Density 5.6 Lead zinc content 38%-45% Sieving rate: 98% Zn 48.00% min. As 0.02% Max. Origin :- Canada , Spain Payment Terms :- LC/SBLC