Subject: How much actual iron is in the human body?

I am writing a science fiction novel, so the question may be a little strange.  
If the human body were "distilled" in some way and all the iron extracted, how 
much iron would there be?  Is the iron of a form that, if enough iron were 
collected from enough blood, something could be built/forged/constructed from 
it?  I know this probably isn't your ordinary question, but it would really help 
my book.  Thanks. MH

Re: How much actual iron is in the human body?