8.6" Wide Polished Petrified Wood (Araucaria) Log - Madagascar
This is a 17 lb petrified wood log with one polished end. It is Araucaria, a type of primitive conifer from Ambilobe, Madagascar. The mottled mixture of red, yellow, purple, and brown coloration along with multiple quartz crystal encrusted pockets makes for a truly gorgeous specimen and display piece. The log measures 8.6 x 8 x 4.3" and the exterior of the log has exceptional wood detail preservation.
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.