fossil

Likely petrified wood

Silicified wood; fossilized plant tissue, commonly replaced by quartz (SiO₂)

AI-generated identification · may be incorrect

Tan-brown, wood-grained specimen with a dull to slightly waxy surface; quartz-replaced material is about Mohs 7 and lacks visible crystal faces. The image alone cannot confirm mineral replacement, and it may instead be ordinary weathered wood.

Identified September 27, 2026More fossil →

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Physical properties

Formation & geological history

Forms when buried wood is mineralized by silica-rich groundwater, preserving its structure; fossilization may occur over millions of years in sedimentary deposits.

Uses & applications

Collected as a fossil and used decoratively; larger sound pieces may be cut and polished for ornaments or lapidary work.

Geological facts

Petrified wood can preserve growth rings and cellular detail, with color influenced by trace minerals such as iron or manganese.

Field identification & locations

Look for continuous growth-ring or cellular patterns through the piece and unusually stone-like weight and hardness; common in sedimentary deposits worldwide. This small, unverified fragment has an estimated value of $1–$10.