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SharePetrified wood is a type of fossil: it exists of fossil wood where all the organic materials have been replaced with minerals (most often a silicate, such as quartz), while retaining the original structure of the wood.
The petrifaction process has occurred underground, when wood became buried under sediment.
For more information about the topic Petrified wood, read the full article at Wikipedia.org, or see the following related articles:
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Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Petrified wood at Wikipedia.org. See the Wikipedia copyright page for more details.
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