The amount of what substance in granite determines its color?

More Questions:

From 1916 to 1938, what US coin featured a buffalo on its back side?

Infantry, Cavalry, and Artillery cards are key to what Parker Brothers game?

Who was the first Russian woman to win a Wimbledon singles title?

What group of artists was known for its paintings of the Catskill Mountains?

What London square is home to Nelson's Column?

What are the residents of the US state of New Hampshire called?

What is the only one of the Great Lakes that has no Canadian waters?

Deimos orbits what planet of the solar system?

What is the largest gland in the human body?

What was the name of the IBM supercomputer which defeated chess champion Garry Kasparov in a 1997 match?

In the TV show "The Simpsons', who is also known as "The Listen Lady"?

What music awards were founded in 1958?

Who has held the world record in the pole vault, 6.14 m, for more than twenty years?

What city provided the setting for the 1970's TV show "One Day at a Time"?

Which US state is nicknamed "Land of 10,000 Lakes"?