This could be the wildest of the bunch. A native aluminum nugget (natural) with an embedded native copper nugget (natural) that has a rectangular shape at the tail end that may suggest some type of crystallization. The tail end of the copper nugget is grainy like the tail end of a lot of native metal nuggets. The head of the copper nugget is protruding out the bottom of the aluminum nugget. The entire specimen was coated in a thick layer of crystallized minerals and inorganic salts and is clearly not manmade. The first XRF that was shot mostly missed the copper. The second XRF that was shot hit the copper and the aluminum and shows a lot more trace elements which suggests native copper.