This native aluminum nugget (natural) has that classic nugget look and feel. Very solid, has a bit of a head and tail with some pock marks from volcanic acid to make it really interesting. XRF analysis shows 63% aluminum, 14% silicon, 9% light elements (LE), 7% zinc, 3% iron and 2% copper with trace amounts of manganese, chromium, tungsten, hafnium, vanadium, lead, tin, cadmium, antimony, palladium and nickel.