Even as a raft, of course, it could have been made from gold, or any element with a molecular number lower than mercury. Lead would still sink in mercury, but gold shouldn't. It was one number down the Periodic Table and so ought to float. Veppers looked over the side of the vessel at where his ingot of gold had entered the liquid metal, but it showed no sign of surfacing yet.
( Iain M. Banks )
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