9.6" Wide, Polished Petrified Wood Section - Saddle Mountain, WA
This is a 9.6" wide, polished section of petrified wood from the Saddle Mountain area of Grant County, Washington. The agate replacement disrupted much of the grain detail, making it difficult to definitively identify. The face of this specimen has been polished by one of the best polishers around, resulting in a glossy finish with no dull spots or scratches. The rest of the specimen has been left in its rough state.
Petrified wood is the name given to wood that has been turned into stone (fossilized) through the process of permineralization. All of the organic matter becomes replaced by minerals, while much of the original structure such as tree rings in retained. For this to happen the wood needs to be buried in an environment both low in oxygen (preventing decomposition) and with flowing, mineral-laden water. The coloration is due to the various minerals that are present during fossilization. For example red colors are due to iron compounds, greens due to copper, etc.