Rock Identifier
Petrified wood (Silicified fossil wood, commonly quartz or chalcedony replacing wood) — fossil
fossil

Petrified wood

Silicified fossil wood, commonly quartz or chalcedony replacing wood

AI-generated identification · may be incorrect

Cream-white and rusty-brown, opaque to slightly translucent in places, with a rough weathered surface and wood-like structure; silica is Mohs 7, but this specimen’s hardness and internal structure cannot be confirmed from the image. Brown staining may be iron oxides.

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Physical properties

Cream-white and rusty-brown, opaque to slightly translucent in places, with a rough weathered surface and wood-like structure; silica is Mohs 7, but this specimen’s hardness and internal structure cannot be confirmed from the image. Brown staining may be iron oxides.

Formation & geological history

Forms when buried wood is gradually mineralized, often by silica-rich groundwater; the precise age and locality cannot be determined from the photo.

Uses & applications

Collected as a fossil and sometimes cut or polished for ornaments, cabochons, and decorative objects; this rough piece appears mainly suitable for collecting.

Geological facts

Petrified wood preserves wood anatomy as minerals replace or fill the original tissues; good specimens can retain growth rings and cellular detail.

Field identification & locations

The pale, woody shape and mineral-filled brown areas suggest fossil wood, but the image does not show diagnostic cellular texture, so identification is provisional. Petrified wood occurs in sedimentary deposits worldwide; value depends on confirmed identity, locality, size, and detail.

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