Lunar free metallic iron is the iron fines and chunks from iron-nickel asteroids that impacted the Lunar surface. It’s also the very small particles of pure iron created during meteoroid impacts, solar wind sputtering, and geological processes. It’s “free” because we won’t need to chemically release it from the rocks. All we need to do is pick it up with a magnet and separate it from the other stuff with it.
This is where I’m going to analyze the data I’ve gathered. All this info is on other pages. I’m going to try to keep this page easy to read so I’m not including sources here. You can look at the data in the appropriate sub-categories.