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"aluminum" explained by:

Youser (1 point with 1 valuation)
Silvery white metal, found combined in over 270 different minerals. Atomic number is 13. The chief ore of aluminium is bauxite. » http://www.webelements.com/aluminium/

Three_quarter_ten (1 point with 1 valuation)
Aluminum is a metallic element. It is the third most abundant element in Earth's crust. Its alloys are popular for making things with.

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