Lead is normally dug from ores that contain other minerals such as: silver, copper, zinc, cadmium and antimony. The raw material is then refined with pine oil, alum, lime and xanthate as well as limestone ore.
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Lead is a metal in and of itself. It is not made of any other mineral. Now, it can be found in other minerals. As a matter of fact, it is almost always mined from other minerals, like cerussite
Lead is a metal substance, thought to be the oldest known metal on earth. Lead used for jewelry has been dated back to 6400 BC. Lead is an element found most commonly in copper ore. You can find more information here: http://en.wikipedia.org/wiki/Lead