Monthly Archives July 2008

Petrified wood – Ancient wood turned into stone

The forests of ancient times still exist today, in the form of petrified forests. These remnants of ancient forests today contain scattered broken trunks of petrified wood lying in the open, or half buried. Petrified wood is a very interesting form of fossil, believed to be millions of years old, and is most often composed of the minerals of agate and quartz, although occasionally, you encounter calcified or opalized petrified wood, which is mainly composed of calcite or opal, respectively. The hardness of petrified wood correspondingly tallies with that of agate or quartz – 7 on the Mohs scale, or
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