platinum and gold have practical uses. it would freak out the goldbugs though if it became financially feasible to get them from space and to land them.
Gold?? Who's suggesting getting gold from asteroids?
On Earth, gold veins are produced by aqueous processes. You wouldn't expect that on asteroids.
Platinum, and platinum-group metals, on the other hand-- these are siderophiles, and hence depleted in the Earth's crust. Good elements to look for in asteroids-- in fact, iridium is the very signature of an asteroid impact.
Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/1BcqLs1h8nk/story01.htm
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