I don't know about other places, but here in PA, there is an old silver mine in Lancaster county where the silver is found in with galena. It is in quartz matrix. I am definitely not a gem expert or anything, however.More then likely you found a sample of Galena. An ore of lead. I can only say that's my hunch, but it still could be some other type of metallic item as I only have a photo to go by. In what part of Iowa was it found?
I wish I had a better camera so I could get a better photo but ill try different lighting to get better clarity.
I wish I had a better camera so I could get a better photo but ill try different lighting to get better clarity.