Aluminium

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are gradually
weathered and broken down by the action of carbon-dioxide from the air dissolved
in rainwater forming �kaolin'. This is further broken down to form other
substances, ultimately resulting in the formation of Aluminium deposits.

Where and how Aluminium is mined?

Aluminium is never found in it's pure state until it has been refined. Aluminium
is made when refining alumina, which is in turn found from the ore �bauxite'.
Bauxite is often mined in the opencast method.

Aluminium deposits are found in many countries, but the countries with
significant deposits include: Guinea, Jamaica, Surinam, Australia and Russia.

How is Aluminium refined?

One method is the �electrolytic process'. This is performed when a low voltage
current is passes through a bath containing alumina in the molten form. The
alumina is broken down into Aluminium metal which collects at the bottom of the
bath at one electrical pole, the cathode, and the oxygen which reacts at the
other pole, the anode, ...

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