Question: [This article](http://www.telegraph.co.uk/news/science/space/5711129/Uranium-could-be-mined-on-the-Moon.html) talks about the possibility of mining Uranium on the moon. Since the Moon lacks the geological forces that have created veins of concentrated minerals on Earth, would extraterrestrial mining be more difficult or impractical? How does Moon, Martian, or asteroid mining overcome the lack of mineral veins otherwise formed by Earth's geology? 

It seems like extraterrestrial mining would be at least as difficult as trying to refine desert sand, which isn't a thing.

[A short video on how gold veins form](https://youtu.be/HOjWRGgBpyU)

Wayfaring Stranger added an interesting link on [ore genesis.](https://en.wikipedia.org/wiki/Ore_genesis#Uranium)

Answer: 
I vaguely remember my dad talking about this. 

Uranium and other heavy elements are dense. When the celestial body was molten (early in it's life) all the heavy elements sank to the core of the body. Now, with tectonics, the heavy elements are brought back up to the surface. This is why we can mine Uranium on Earth near the surface: the Uranium was brought back up due to convention current on Earth.
In conclusion, it's not worth it at all to mine on a non-tectonically active planet/moon

If anyone can extend this, please do.
Quakes and other large scale geological activity ( and indeed running water ! ) cause no end of trouble for mining operations. Much better to be able to sit on a nice quiet rock in space without all that craziness going on.

We have, at this time, no real basis for saying one way or another, that there are not mineral concentrations. If all I let you do was dig a few meter deep boreholes in the surface of the Earth at random locations, what are the odds you would know anything about mineral concentrations for mining ?