sedimentary
Petrified Wood
Silicified Wood
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, variable earth-tone colors, vitreous to waxy luster, amorphous crystal structure with preserved cellular wood grain.
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Physical properties
Hardness of 7 on the Mohs scale, variable earth-tone colors, vitreous to waxy luster, amorphous crystal structure with preserved cellular wood grain.
Formation & geological history
Formed when buried organic wood is slowly replaced by silica-rich groundwater over millions of years.
Uses & applications
Used for ornamental carvings, high-end lapidary work, jewelry, and display collector specimens.
Geological facts
The organic material is completely replaced by minerals like quartz while retaining the original cellular structure of the tree.
Field identification & locations
Identify by its distinct wood-like grain patterns combined with a stone-like weight and high hardness; found worldwide in ancient alluvial deposits.
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