Is there enough gold to build Camelot?

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Margrave
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Is there enough gold to build Camelot?

Postby Margrave » Tue Mar 14, 2017 1:11 am UTC

In the 1981 film Excalibur, King Arthur builds Camelot Castle of gold and silver. (An architect he is not.) Assuming gold-only to simplify, has enough gold been brought to light in all human history to build a castle the size of, say, the Tower of London?

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Re: Is there enough gold to build Camelot?

Postby Felstaff » Tue Mar 14, 2017 2:41 am UTC

The most conservative estimate of gold is 171,300 tonnes, which can build a 20m3 cube (8,000m3).
The White Tower keep within the Tower of London is 36m x 32m x 27m, or 31,104m3.
Obviously, the Tower is hollow, so if we make the walls, say, average out to 2m thick, with a 1m-thick roof, we take out the 32m x 28m x 26m cube of air, that's 31,104m3 - 23,296m3 = 7,808m3 of gold required.

Which'll leave you 192m3 of gold, so you can build a drawbridge, too.
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Re: Is there enough gold to build Camelot?

Postby Soupspoon » Tue Mar 14, 2017 3:17 am UTC

But don't forget that 'tis such a silly place.

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LaserGuy
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Re: Is there enough gold to build Camelot?

Postby LaserGuy » Tue Mar 14, 2017 10:40 pm UTC

You'd be better off with the silver. There's about 10 times as much silver as gold by weight, and it's only about half as dense, so you end up with about 20 times the workable volume. 160,000m3. In this case, you're talking about a cube that's 54 m to the size, or, more practically, a prism that's 100m on the side and 16m high, which would make a pretty sizable castle (for comparison, Edinburgh castle has an area of 35000 m2, which includes the grounds). You can always plate it with the gold afterward.

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Re: Is there enough gold to build Camelot?

Postby gmalivuk » Thu Mar 16, 2017 2:31 pm UTC

There's not enough gold already mined to build it, but there's likely far, far more than enough a couple thousand kilometers below us.
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Re: Is there enough gold to build Camelot?

Postby Zohar » Thu Mar 16, 2017 3:08 pm UTC

gmalivuk wrote:There's not enough gold already mined to build it, but there's likely far, far more than enough a couple thousand kilometers below us.

WTF is up with that screen-covering ad??? I immediately closed the browser window and didn't look at the content at all, nor do I have any idea what the ad was about.
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Re: Is there enough gold to build Camelot?

Postby gmalivuk » Thu Mar 16, 2017 3:57 pm UTC

I had ad block on, so I'm not sure what you saw.
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