PETRIFIED PALM LEAF PENTOXYLON SLAB
An outstanding specimen of rare Petrified Palm Leaf Pentoxylon Slab to grace your eyes. This specimen is cut and glossed to show the true beauty and form of the grains of wood.
Walloon Coal Measures, Chinchilla, Queensland, Australia.
33cm x 23.5cm x 1.8cm, 2457g.
The fossil woods from Queensland are all wood that has fossilized and then broke apart. They were carried by water and river smoothed before being deposited in Jurassic formations. The result is the outsides are smooth and often more worn away on one side than the other. Some are found as large boulders and some as smaller river smoothed elongated logs and sticks. They frequently come from agricultural fields. Here farmers plowed these rocks out of the way before they figured out what they were. Now they are scarce, having been diligently hunted for decades.
Petrified wood (from the Greek root petro meaning rock or stone; literally “wood turned into stone” do I hear remnants of the Medusa Legend) is the name given to a special type of fossilised remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralisation. And from all those cartoons I thought the tree got scared.
How wood turns into Petrified wood which is a fossil.
It forms when plant material is buried by sediment and protected from decay by oxygen and organisms. Then groundwater rich in dissolved solids flows through the sediment replacing the original plant material with silica, calcite, pyrite or another inorganic material such as opal.