Mainly uranium but vanadium is also often found in close association with this ore.
It is so because metals cannot be extracted from minerals in a convenient way. E.g.:- Aluminum metal is found in both minerals: clay and bauxite. Aluminum metal is extracted only from bauxite in a convenient way. So, bauxite is an ore of aluminum. On the other hand, it is not extracted from clay so clay remains only as mineral not ore of aluminum.
Rhodium is pretty rare and very expensive. More rare than platinum.
Brazil qualifies as such. It is the third largest producer of iron ore in the world, having extracted 398 million tonnes throughout 2013.
Salt can be extracted from mines or sea water.
Iron
Metal cannot be extracted from Gold, as Gold itself is a metal.
Aluminium is extracted from alumina.
Iron is extracted from haematite.
Lithium is extracted as the molten metal by a process of electrolysis.
copper
calcium
Zinc is the metal that can be extracted from sphalerite ore. Sphalerite is the most important ore of zinc and typically contains around 67% zinc when pure. The extraction process involves crushing and heating the ore to remove impurities and recover the zinc metal.
No, ore is not the crudest form of metal. Ore refers to a naturally occurring rock or mineral from which a metal or valuable mineral can be extracted. The crudest form of metal is typically the metal in its raw state after it has been extracted from the ore and before it has been processed or refined.
zinc
calcium
Titanium is extrated.