Iron
Iron is extracted from haematite.
Iron
Iron is bonded to six oxygen ligands.
Ore, as in rocks which contain sufficient metal to extract and it is economical to do so. Ores include bauxite, a copper ore. Ores can be used to extract precious metals which in turn can be used for electrical wiring, in the case of copper or as a catalyst, in the case of Haematite, Iron ore (the haber process).
Either, or both. Minerals are usually considered gems if they are valuable, attractive and highly pure. Minerals are considered ores if they are used to extract a substance. For example, pure haematite is polished and sold as a gem, while crude haematite is used to extract iron.
Metals are extracted from ores. An ore is a rock that contains enough of a mineral (metal compound) for the metal to be extracted from it. Most metals are extracted from an ore by reduction with carbon or by electrolysis.
Haematite is a form of iron(III) oxide, Fe2O3, which is found in the Earth's crust.
To extract a metal using carbon, the metal ore is mixed with carbon and heated in a furnace. The carbon reacts with oxygen in the metal ore to form carbon dioxide gas, leaving behind the pure metal. This process is known as reduction and is commonly used to extract metals such as iron and copper.
Black
Haematite is another name for iron ore. The prefix 'Haem' comes from Classical Greek for iron. Compare with the Latin for iron , which is 'Ferrum' (Fe). Haematite is an oxide of ioron. So by smelting, iron ore was reduced to iron. So the metal in haematite is IRON. Compare with the biological name 'haemaglobin', part of the blood in humans. The 'haem' moiety indicates the 'iron' ion. Or the word ' **Haematuri**a', This is a medical term , for blood in the urine stream.
You would be able to extract 10g of metal from 1000g of an ore containing 1 percent metal. This is calculated by taking 1 percent of 1000g.
Dolomite