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Old 12-04-2019, 07:57 PM   #6
Join Date: Feb 2005
Location: Berkeley, CA
Default Re: Space Mining: Ore Availability and Yield

Originally Posted by thrash View Post
*Radioactives are mostly not, in fact, good asteroidal resources. They are concentrated by the geological processes that occur on planetary surfaces.
That statement is true of just about any resource you might name. They're a bit better for finding siderophile minerals because most of Earth's supply is trapped in its core, but it's still along the lines of "purify a thousand tons of iron to get a kilogram of platinum", and more problematically, there isn't a "mother lode" out there, one nickel-iron asteroid has the same stuff in it as another.
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