This native aluminum nugget (natural) has a wide tail and a nodular head with just a little corrosion from volcanic acid. The nodular head protrudes outward. XRF analysis shows 51% aluminum, 36% light elements (LE), 5% silicon, 3% copper and 2% zinc with trace amounts of iron, manganese, phosphorus, chromium, hafnium, nickel, tungsten, titanium, lead, cadmium, vanadium, tin, antimony, bismuth and zirconium.