The ore bauxite is the chief commercial source of which element?

More Questions:

What horse won the 2012 Kentucky Derby and Preakness Stakes?

Which small guitar associated with George Formby was patented in Hawaii in 1917?

Which movie star published an autobiography in 2002 entitled "Lucky Man"?

Which French artist, born in 1834 was best known for his paintings of ballet dancers?

For how many years were Madonna and Sean Penn married?

Which band member of Blind Melon died of drug overdose?

How did actor Humphrey Bogart die?

What British TV series featured Eddie "Fitz" Fitzgerald and Jane "Panhandle" Penhaligon?

Who played Uncle Buck in the movie "Uncle Buck"?

What was John F. Kennedy's wife's maiden name?

Who was crowned king of England on December 25, 1066?

Who was the only clean-shaven US president in the fifty years between Grant and Taft?

Inanna is the ancient Sumerian goddess of what?

Which book did James Fenimore Cooper publish in 1826 that was later made into a movie, starring Daniel Day-Lewis?

Nuuk is the capital of which country?