What is silicified wood?

Silicified wood, also known as wood fossils, is mainly composed of silicon dioxide. Silicified wood was formed 1 100 million years ago. Due to the change of the earth's crust, the trunk of ancient trees was buried in the stratum. Because it is in a closed water-deficient environment, wood is not easy to rot. Through the action of the earth's hydrothermal solution (such as volcanic eruption, etc.) ), silica, iron sulfide, calcium carbonate and other substances enter the xylem cells of trees, replacing the original wood components and retaining some original forms of trees. After more than 100 million years of fossilization, wood fossils have been formed. Most wood fossils are formed by the invasion of silica, so they are also called silicified wood.

Silicified wood can be subdivided into protein silicified wood, agate silicified wood and ordinary silicified wood. The main mineral components of protein silicified wood are opal and chalcedony. The Mohs hardness is above 7 degrees, and the density can reach 2.2-2.8 g/cm3. Therefore, some people call this silicified wood tree jade. Silicified wood and agate silicified wood are rare in protein.

Wood agate, also known as agate silicified wood. The main component of agate silicified wood is also silicon dioxide, and its hardness, density and color are exactly the same as those of natural agate jade, so it is called agate silicified wood, referred to as wood agate.

Geological circles believe that the collision between Eurasia plate and India plate formed a metamorphic belt from Dehong, China, Yunnan, to India via Myanmar, which is rich in precious stones. This area is also the main producing area of tree-shaped jade and wood agate. Agate silicified wood is red, white, gray, yellow, maroon, maroon and green.

Silicified wood is of great ornamental value: because silicified wood was produced in ancient times, it came out before human beings, and it was pregnant with magical cultural connotations. The mysterious colors of ancient plants are accompanied by beautiful annual rings, and the bark and branches remain the same, symbolizing longevity, auspiciousness and richness. Silicified wood belongs to non-renewable resources. Tree-shaped jade or wood agate with hard texture, bright color and rich color is more attractive to collectors.