This native aluminum nugget (natural) has deep hole with residual mineral deposits in the hole and the inside of the tail region. This specimen contains 0.042% arsenic which is low enough that it doesn't require a DOT or OSHA warning and can be shipped safely but you must handle this specimen with extreme care. Always use nitrile gloves when handling this specimen. Wash your hands after handling this specimen even if you use gloves and dispose the gloves safely. If you collect hazardous minerals then this specimen is for you. XRF analysis shows 75% aluminum and 24% light elements (LE) with trace amounts of lead, iron, zinc, sulfur, manganese, arsenic, tantalum, titanium, hafnium, chromium, cadmium, tin, antimony, palladium and zirconium.