Interesting show about gold on "HOw the EArth was made" on history channel last night with some things I didn't know about. First off, gold was deposited in little particles all over the earth when the earth was being formed from an exploding star. It can't react with anything other than other gold particles. There essenitially gold everywhere, but deposits of gold that have come together is what many people have mined. Gets deposited in curves on river banks, and near fissure in the earth where hot water/magma come up. Pretty cool so anybody who has gold, that gold has not been changed for millions and millions of years.