Sequoia petrified wood Vantage, Washington
Petrified wood consists mostly of silica in the form of minerals chalcedony and opal.
Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization.
This is a petrified Sequoia tree that is about 16 million years old. That comes from around the Vantage area.
It measures at: