gold

If all the gold ever found was in just one place how much gold would there be?

And, all that gold is now thought to have been produced when two Neutron stars collided.

Oh, and it was deposited on Earth by bombardment by meteors.

Huh, fascinating. I’d never heard that before. Oh, sure, it’s easy enough to say that a neutron star collision would produce some gold (and other heavy elements), but this is the first I heard that it might account for the vast majority of it.

This was a *Jeopardy! *clue, several years ago. People were amazed that it would fit into such a relatively small cube.

Back in the 1970s, the estimate was 50,000 tonnes since ancient times. Beginning in the 1980s, gold production levels leaped ahead, producing more than 500 tonnes a year (to the present 1,200+.)

Of course, we’re just talking about mineable gold near the surface of the crust. No reason why you should have more gold in the mantle and around the core.

The supernova creation of heavier elements would have required 7 cycles to product enough of the heavier atoms as seen in earth’s profile.

For earth to have been from so many supernova, the zone would have had to have been relatively dense with matter and so the zone could easily produce neutron stars too.

Don’t forget the gold in the ocean:

He seems to be suggesting another source of gold on Earth, but the research is ~20 years old, so take it with a grain of salt.

Sure, there is. Gold is dense. That’s why our core is iron and nickel.

By “found” do you mean “located” or “recovered”?

Or an entire oceanful…