Gallium is produced from the waste streams of Aluminum production (primarily at least), and a whole lot of it just isn't extracted and left as waste.
Platinum is quite a lot more valuable than gold, found in similar deposits, and rather rare. (you could say it is also produced from gold production waste streams and be mostly correct, it used to just be discarded long ago, but now it is very highly valued)
Platinum is quite a lot more valuable than gold, found in similar deposits, and rather rare. (you could say it is also produced from gold production waste streams and be mostly correct, it used to just be discarded long ago, but now it is very highly valued)