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by glenstein 23 days ago
I think atmospheric extraction is very important and valuable but we'd be missing heavy metals and some critical elements. You do have carbon, oxygen, nitrogen, sulfur, a little bit of hydrogen, a little bit of chlorine and flourine, and you can do a lot with those. Not as much hydrogen as you would want or need.

But potassium, sodium, calcium, magnesium, silica, iron oxides, nickel, titanium etc. are available on the surface.