What is a mineral that is only made up with one element?

What are brownfields? What amino acids are not used for protein synthesis? Why do animals become dehydrated? If a baby weighs 13 ounces how many grams is that? What meteorology term used for sandstorm in Arizona? Can you legally withhold the rent in Texas due to landlord not maintaining property such as 2 broken windows since hurricane Ike almost 3 months ago? What occurs at stage 3 of meiosis? Is 0 latitude 0 longitude on land or water? How many beers are there in the world? List three conditions that must exist for the continuous fusion of hydrogen to occur? Bottleneck can result in less fertility caused by increased? Who are the cast members of the brainiac girls big bang farm? How do north and south poles of 2 magnets react to each other? What is the lowest elevation for a mountain in meters? What gives marble the swirls of color? If an electron in a hydrogen atom relaxes to the second energy level emitting a photon of wavelength 410.2 nm what higher energy level did it start at? What between an active site and its substrate often strains bonds and helps the reactions proceed? Why does the size of chest increase or decrease on inhaling or exhaling? What color is a geranium? The Aswan High Dam was blamed for an outbreak of schistosomiasis in what country where it stopped the droughts that once stopped the disease?