Those ores which contain metal in the form of oxides are called as oxide ores.
Ores.
Pews such as chromium,nickel,and lead, pb, ores form within cooling
Minerals are mined only in region where they form in ores as the cost of extraction is very high.
Minerals are mined only in region where they form in ores as the cost of extraction is very high.
Francium exist in uranium and thorium ores; the chemical form is not known.
Metals are usually found in the Earth's crust, in the form of ores.
Carbon, usually in impure form such as coal or coke, is often used to remove oxygen from metal ores.
When magma changes the composition of existing rock.
Silver is most commonly found as its oxide in their ores.
When Hot Magma comes into contact with existing rock.
Radium exist in very small concentrations in uranium ores but not in a metallic, pure form.