6.7" Petrified "Peanut Wood" Section - Australia

This is a 6.7" polished section of petrified wood (Conifer) from Australia known is "Peanut Wood". It is actually petrified driftwood that is full of boreholes from clam larvae of the genus Teredo, commonly know as shipworms. These boreholes were filled in by a white mineral during the fossilization process, giving this petrified wood it's unique appearance. The wood itself is from Aruacaria, a type of conifer and is Lower Cretaceous in age, or approximately 113 million years old.

Petrified wood is the name given to wood that has been turned into stone (fossilized) through the process of permineralization. In this process, all of the organic matter becomes replaced by minerals, while much of the original structure, such as tree rings, is retained. For this to happen, the wood needs to be buried in an environment low in oxygen to prevent decomposition and with flowing, mineral-laden water, so minerals may replace structures. The coloration is caused by various minerals that present in that water during fossilization. For example, red colors are due to iron compounds, greens due to copper, and so on.
Jacobs Gully, Mooka Station, Western Australia
Windalia Radiolarite Formation
6.7 x 5.3 x 2.2"
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