Question

write a short note about the following inis . 1 iron ore 2 aluminium 3 copper ore.​

Answer 1

Answer:

1. IRON ORE

Iron ores are rocks and minerals from which metallic iron can be economically extracted.[1]

Iron (Fe) is one of the most abundant rock-forming elements. It makes up about 5% of the Earth's crust. It is the second most abundant and widely distributed metal (Aluminium is the most common). People have used it for more than 3,000 years. However, its use only became widespread in the 14th century, when smelting furnaces (the forerunner of blast furnaces) began to replace forges.

The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red.

Iron ores:

magnetite (Fe

3O

4, 72.4% Fe)

hematite (Fe

2O

3, 69.9% Fe)

goethite (FeO(OH), 62.9% Fe)

limonite (FeO(OH).n(H2O))

siderite (FeCO3, 48.2% Fe)

2.

Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic and ductile metal in the boron group. By mass, aluminium makes up about 8% of the Earth's crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. The chief ore of aluminium is bauxite. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals.[9]

Naming

after alumina (aluminium oxide), itself named after mineral alum

Prediction

Antoine Lavoisier (1782)

Discovery and first isolation

Hans Christian Ørsted (1824)

Named by

Humphry Davy (1812)

Main isotopes of aluminium

Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct

26Al trace 7.17×105 y β+ 26Mg

ε 26Mg

γ –

27Al 100% stable

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Aluminium is remarkable for its low density and its ability to resist corrosion through the phenomenon of passivation. Aluminium and its alloys are vital to the aerospace industry[10] and important in transportation and building industries, such as building facades and window frames.[11] The oxides and sulfates are the most useful compounds of aluminium.[10]

Despite its prevalence in the environment, no known form of life uses aluminium salts metabolically, but aluminium is well tolerated by plants and animals.[12] Because of these salts' abundance, the potential for a biological role for them is of continuing interest, and studies continue.

3. COPPER ORE:

Copper ores. The main copper sulphide minerals are chalcopyrite (CuFeS2) chalcocite (Cu2S), covellite (CuS), bornite (Cu5FeS4), tetrahedrite ((Cu,Fe)12Sb4S13) and enargite (Cu3AsS4). The largest source of copper is from porphyry ore deposits in which one or a combination of the aforementioned minerals occurs.