Petrified wood is a fossil. It forms when plant material is buried by sediment and protected from decay due to 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.
Ruby City Gems & Minerals
130 E. Main St.
Franklin, NC 28734
Phone: 828-524-3967 or 800-821-RUBY