I found this the other day. About drove me crazy. My QDII kept saying something was there and all I could see was dirt clods. I started dividing my dirt clod pile in half and then half again until I finally isolated the dirt clod that made my machine go beep. I didn't really know what I had until I got it back home and washed off with soap and water. I wasn't completely sure it was metallic until I had it all cleaned up and under good lights. It looks like aluminum but seems harder than aluminum when I tried to scratch it with my knife. It is silver looking under the oxided skin. I suspect it is magnesium from a bat because I found it in a dug out at the ball park. Of course if anyone asks, I think I will tell them it is a meteorite.