Prabin Kalikote

a.    Haematite: Iron
b.    Bauxite: Aluminium
c.    Argentite: Silver
d.    Cuprite: Copper
e.    Calaverite: Gold

a.    Iron:
    > It is good conductor of heat.
    > Its specific gravity is 7.86.
    > It is malleable and ductile.
b.    Aluminium:
    > It is good conductor of heat and electricity.
    > its specific gravity is 2.7.
    > It is highly malleable and ductile.
c.    Copper:
    > It is good conductor of heat and electricity.
    > its specific gravity is 8.95.
...

a.    Iron: Haematite (Fe₂O₃)
b.    Aluminium: Bauxite (Al₂O₃ . 2H₂O)
c.    Copper: Copper phyrite "chalcopyrite" (CuFeS₂)
d.    Silver: Argentite (Ag₂S)
e.    Gold: Alluvial sand/soil

Iron is extracted by the following ways:
>    It is extracted from haematite ore.
>    it is collected from ore mines and crushed into fine powder.
>    Non-magnetic dirts are separated by the electromagnetic separation method.
>    Finally molten iron is obtained and further purified.

Iron is of the reactive metals. So, it doesn't occur in free state in nature. It forms different types of compounds like oxides sulphides, chlorides, hydroxides, carbonates, etc. A little amount of iron is present in haemoglobin of our blood.

The process by which we can get pure metals from their ores id called metallugary.

i.    Minerals and Ores.