Any
mineral from which copper is extracted, including native copper, Cu;
chalcocite, Cu2S; chalcopyrite, CuFeS2; bornite, Cu5FeS4; azurite,
Cu3(CO3)2(OH)2; malachite, Cu2CO3(OH)2; and chrysocolla, CuSiO3.2H2O.
Native copper and the copper sulphides are usually found in veins
associated with igneous intrusions. Chrysocolla and the carbonates
are products of the weathering of copper-bearing rocks. Copper was
one of the first metals to be worked, because it occurred in native
form and needed little refining. Today the main producers are the
USA, Russias, Kazakhstan, Georgia, Uzbekistan, Armenia, Zambia, Chile,
Peru, Canada, and the Democratic Republic of Congo.
Copper
is one of the basic chemical elements. In its nearly pure state, copper
is a reddish-orange metal known for its high thermal and electrical
conductivity. It is commonly used to produce a wide variety of products,
including electrical wire, cooking pots and pans, pipes and tubes,
automobile radiators, and many others. Copper is also used as a pigment
and preservative for paper, paint, textiles, and wood. It is combined
with zinc to produce brass and with tin to produce bronze.
In
Pakistan we have large deposits of copper ore in the mountaineous
region of Baluchistan province which are upto the standard of international
buyers.The hilly tract of Dalbandin,Noshki and Chaghai have reserves
of this precious mineral.