Kaolin or china clay & hydrous material.
Activated fullers earth powder & granules, attapulgite clay powder & granules, montmorillonite.
Iron ore 62% fe (basis) magnetite..
Cenosphere, wet fly ash.
Ore like crushed quartz ore.
Fuller's earth and alum.
Fly ash and related products..
Ores and minerals like ilmenite sand.
Activated fullers earth (bentonite).
Diamond thermal paper, minerals.
Quick lime lumps, quick lime powder, hydrated lime, fat lime, calcite powder etc..
Iridium, silver mercury, nickel.