Iridium, Lead or what?
Hi SilverA, The density of Iridium is 22.56 g/cm3, the density of Chengdeite (Ir3Fe) is 19.3 g/cm3. Pure lead has a density of 11.3 g/cm3. The melting point of pure lead (327oC)is very low, compared to other metals. Pure lead is very soft.