The biggest deposits of the metal ore in the world are to be found in the eastern Congo.
the mine's reserves of ore
The study of rocks, ores and minerals is an integral part of Geology class in school.
Specimens of minerals, ores , and gemstones began to be saved for their scientific value and as natural curiosities.
Mercury is now extracted from its ores by a method that has been used for hundreds of years.
They live in mountainous regions, and mine ores and metal to craft weapons.
It was also used in the production of metals from their ores .
Iron, in contrast, combines with elements such as oxygen and sulphur to make mineral ores .
These metals are typically won from polymetallic ores rich in sulfosalts.
In my view, the commodity boom is a reminder that the supply of ores , minerals and metals is not infinitely flexible.