Photographer: Rosanna Hamilton Copyright: © 2003 Rosanna Hamilton Date: 2003/07/23 Location: Petrified Forest, Arizona

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Caption

This is one of many petrified logs that can be found in the Petrified Forest National Park. Notice the many colors in the log. Pure quartz crystalizes as clear as glass, but when oxides of various elements are introduced beautiful colors appear. The red and yellows are due to iron oxides.