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Product Description
Petrified Wood Powder River Basin Wyoming Polished Round Slab
Lovely full "round" Petrified Wood from Wyoming that has been slabbed, and polished on one face.
The polished face is 5.2 inches by 3.9 inches and it is slanted from .31 to .51 of an inch at its thickest.
In the Powder River Basin, west and south of the Black Hills, several varieties of petrified wood, chert and jasper are found.
The petrified wood is from the Wasatch Formation and is from the Eocene Epoch, 33-55 million years old.
Petrified Wood aka Fossilized Wood is formed when a tree died and was quickly buried by sediments. Minerals in the groundwater then permeated the wood, replacing the original organic matter and turning it to stone. The main mineral is silica, but trace elements in the silica create a variety of colors.
