... 8mm, 20-100mm, 60mesh, 120mesh,200, 325mesh Potash Feldspar lump , as K fertilizers Potassium feldspar is silicate mineral with rich potassium ... consistency,little flux rate etc. It can be used widely as pottery material, pottery glaze, abrasives, milling tools and materials, ... : 0-8mm, 20-100mm, 60mesh, 120mesh,200mesh, 325mesh or as requestAppearance: colored white or pinkK2O: 12.0-14.0%Na2O ...