http://www.wisegeek.com/what-is-himalayan-pink-salt.htm http://www.wisegeek.com/what-is-himalayan-pink-salt.htm formed more than 250 million years ago wisegeek.com http://www.wisegeek.com/what-is-himalayan-pink-salt.htm http://www.wisegeek.com/what-is-himalayan-pink-salt.htm Himalayan Pink Salt Himalayan