| |Physical properties:
Crystal System: Trigonal
Chemical Composition: Fossil wood replaced by Chalcedony and sometimes also by Opal, Coal, Pyrite and/or Calcite.
Mineral Class: Silicates
Color: Brown, Black/Brown, Cream, Tan, Red, Yellow
Primary Chakra: Root, Sacral, Solar Plexus
Astrological sign(s): Leo
Vibration: Number 77
Fossilized Petrified Wood, which is also known as Agatized Wood, forms when a tree has died and silicon dioxide forms in place of the wood that degrades until there is no wood left, only Quartz.