This native aluminum nugget (natural) has it all. Bubbles, decomposition pits and an incredible shape. It looks like there was a branch involved but the 90° portion suggests contact with a rock. One of my finest specimens in this weight range. XRF analysis shows 71% aluminum and 26% light elements (LE) with trace amounts of iron, silicon, chromium, copper, zinc, titanium, manganese, hafnium, cadmium, lead, antimony, tungsten, tin, palladium and nickel.