Mineral Macro No. 42-29390321
by Gerald & Buff Corsi - © Corbis. All Rights Reserved. - © Gerald & Buff Corsi/Visuals Unlimited/Corbis
Travertine is a form of limestone deposited by mineral springs, especially hot springs, Marion, Virginia, USA
20 Nov 2010 --- Travertine is a form of limestone deposited by mineral springs, especially hot springs, Marion, Virginia, USA --- Image by © Gerald & Buff Corsi/Visuals Unlimited/Corbis