The most important minerals of potassium are: potash, sylvite, carnalite, kainite, polyhalite, biotite, etc.
Potassium is difficult to extract from its ore even through electrolysis, because it is very reactive
The most often mined ore of copper is the mineral chalcopyrite.
Lithium (Li), with a Mohs hardness of 0,6.
Potassium Carbonate
The ore is cassiterite, the only commercially important source of tin.
Potassium is difficult to extract from its ore even through electrolysis, because it is very reactive
you cannot mine pure potassium but you can mine potassium chloride or as it as Potash ore. These mines are found allover the world where there have been ancient sea that have evaporated and let potassium salts.
The common name for potassium nitrate is saltpeter, but I don't think potassium nitride has a common name.
The most common aluminium ore is bauxite.
Perhaps the most common iron ore is taconite.
There are many types of metal ore on Earth. One of the most common is iron ore, which is also known as hematite.
Heamatite
Carbon is an element common in many ores. an ore is a composition of many elements
The most often mined ore of copper is the mineral chalcopyrite.
common well it depends on where you are Iron is common in most places and it is not uncommon for Iron ore to be mistaken for just orange to brownish colored rocks on the ground
Chalcopyrite
Copper