Inkomba ye-MOS: Idwala le-sedimentary le-calcium carbonate elakhiwe izinsalela zezidalwa zasolwandle ezicindezelwe. Umbala ofanayo emithunzini ye-cream, empunga, nempunga eluhlaza okwesibhakabhaka, kunezinsalela ezincane zezinto ezaguqulwa zaba yitshe. Lisetshenziswa kakhulu ekwakhiweni, ephansi, ekumbozeni izindonga, nanjengesincibilikisi ekwenziweni kwensimbi. Lithambile kunegranithi, linobuhle obuzothile nobucolekile.