Porphyry copper mineral deposits are usually massive, with extraction taking place by open-pit mining. Copper-bearing sedimentary rocks are the second most important type of copper deposit ...

According to the World Economic Forum, Ukraine has about 20,000 mineral deposits covering 116 types, but only about 15% of sites were being actively exploited at the time of Russia's full-scale ...

MOSCOW, Feb 26 (Reuters) - President Vladimir Putin has offered the U.S. the opportunity under a future economic deal to jointly explore Russia's rare earth metal deposits that he says are greater ...