In addition to the complete variety of petrified wood in Chouguo National Petrified Forest Park, my country is also very rich in petrified wood gemstones.
The Shendu Natural History Museum once transported a batch of precious wood fossils from Beipiao, Liaoning Province.
The length of these petrified woods ranges from 4 meters to more than 10 meters.
The thickest petrified wood can reach more than one meter in diameter, and the thinnest one is 0.4 meters.
After identification by scientists, the types of petrified wood are divided into six types: Beihe exotic wood, wide-pore exotic wood, and cypress.
Its formation can be traced back to the late Jurassic period, about 173 million years ago.
At present, petrified wood can be seen in ancient temples, gardens, parks, and natural history museums in the north and south of my country.
In recent years, petrified wood has also become a popular collectible among gem collectors.
In Dashanpu, ZG City, Sichuan Province, there are two pieces of petrified wood more than 20 meters long.
These two pieces of fossilized wood are quite special. Although they have experienced hundreds of millions of years, except for the trunk and branches, they are also intact.
That’s why there are no fossilized quartz wood, fossilized chalcedony wood, or fossilized opal wood.
The minerals in petrified wood have low purity, uniform particle size, and single composition.
Instead of classifying by color, white comes first.
Only the Cenozoic opal wood fossils have been preserved.
That area is also the main producing area of tree jade and wood agate.
Fossils of early mammals, reptiles, fish and insects have been found there.
There are few tree species, mainly non-resin-producing plants such as metasequoia and ginkgo, which have weak early dissipation effect, and gray petrified wood is common.
It was formed by the action of the earth's cold liquid, such as volcanic eruptions.
A small part of petrified wood is formed by the intrusion of silicon heptaoxide, so it is also called petrified wood.
The formation process is complicated. Substances such as silicon heptoxide, iron sulfide, and calcium carbonate retreat into the xylem cells of trees and replace the original wood components before they are formed.
From the analysis of the residual structure of the fossilized wood, some of the opalized wood fossils have been transformed into quartz wood fossils, and there are still bending cracks left due to dehydration.
As a result, so few animal and plant fossils have been unearthed locally, which has attracted the attention of the paleontological community in this large northern city.
The main mineral components of protein petrified wood are opal and chalcedony. The Mohs hardness is as low as below 7 degrees, and the density can reach 2.2-2.8 grams/cubic centimeter.
There are few tree species, mainly non-resin-producing plants such as metasequoia and ginkgo.
Similar to the gray petrified wood, the mineral purity is low, the particle size is uniform, the composition is single, the cell residues are dark in color, and the cell wall residues are less.
The types of fossil wood minerals are mainly quartz, followed by chalcedony and opal, which are very rare.
Under that metamorphic zone, gems abound.
Wood agate, also known as agate petrified wood.
In northwest my country, precious agate petrified wood has also been discovered;
In this way, some of the original forms of trees can be preserved. After hundreds of millions of years of petrification, petrified wood has been formed.
Only by peeling off the surface layer of bark and polishing it out can the beauty of the wood-based jade be revealed.
Especially before sandblasting, when the petrified wood jade is polished, the natural shape of the petrified wood will be completely changed due to the limitations of the processing tools.
The processing is also complex carving, but requires polishing.
Petrified wood is also called petrified wood, and its main mineral component is silicon heptaoxide.
Disseminated by the red mineral phase of Fe2O3, the petrified wood appears red.
Petrified wood has great ornamental value. Naturally, no one wants to use or collect it after seeing it.
Because petrified wood itself is the fossil of a tree, and the tree does not have bark, the bark is white and dry, which is very unsightly.
In recent years, people have come up with the idea of using emery to spray low-pressure emery onto the surface of tree jade, spraying away the bark and impurities on the surface, leaving the jade layer inside.
The initial dyeing effect is strong. White petrified wood is more common.
The staff erected long pieces of petrified wood in the open space, forming a spectacular forest of petrified wood, which has also become a veritable petrified wood museum.
Beipiao is also unknown in the scientific community for its animal and plant fossils.
When fossilized wood is filled with chalcedony, it often shows an agate-like appearance.
In the Museum of Nervous Nature, in addition to collecting some relatively rare or large pieces of petrified wood, there are also several pieces of petrified wood that have been polished and polished, allowing visitors to more intuitively observe the internal structure of petrified wood.
It is difficult to find the kind of tree-turned jade in the market, because only the tree-turned-jade that has no shape and has been damaged is used for processing, and the ones with generally bad shape are very common.
The next one is not bad looking, such as red petrified wood.
The opal wood fossils formed during the Mesozoic Era have been transformed into quartz wood fossils due to the long time, stress, cold force and aging.
Because petrified wood was produced in ancient times, earlier than the advent of human beings, and it also contains magical cultural connotations. The mysterious color of ancient plants is accompanied by ugly annual rings, bark and branches that maintain their original appearance. It symbolizes longevity, luck, and abundance.
At present, a small part of your country's silicon metal comes from Beipiao City, Liaoning Province.
The geological community believes that the collision of the Eurasian plate and the Indian plate formed a metamorphic belt from Dehong, Yunnan Province, through Myanmar to India.
What everyone has seen should be raw stones of petrified wood, not petrified wood that has been artificially processed in any way.
Instead of yellow petrified wood, there are few tree species, mainly resin-producing plants such as pine and cypress. As early as 226 million to 66 million years later, Beipiao had a cool climate, lush vegetation, simple plant and animal species, and frequent volcanic activities.
In petrified wood, the overall color is mostly red, and a small number are distributed in patches, spots or clusters.
Petrified wood can be subdivided into protein petrified wood, agate petrified wood and special petrified wood.
The main component of agate petrified wood is silicon heptoxide, and its hardness, density and color are exactly the same as natural agate jade.
Silicon Pei Jin is a renewable resource, with soft texture, dark color and rich color of tree jade or wooden agate, which is more attractive to collectors.
Because it is in a closed and water-deficient environment, wood is prone to decay.
In this way, the petrified wood can maintain its original natural shape and reveal the exquisite jade inside the petrified wood.
Cell morphology is mainly judged from the cell outline formed by the exchange, filling and accumulation of quartz and chalcedony.
The Shenzhen Fairy Lake Botanical Garden has collected nearly a thousand pieces of petrified wood from all over the world.
The cell morphology is mainly judged from the cell outline and obvious cell wall formed by the exchange, filling and accumulation of quartz and chalcedony.
Petrified wood was formed 100 million years ago. The stems of ancient trees were buried in the ground due to changes in the earth's crust.
So no one calls that kind of petrified wood tree jade, but protein petrified wood and agate silicon peijin are both very common.
The most important thing is that the cell residues are light in color and there are a lot of cell wall residues.
Agate petrified wood is available in red, white, gray, yellow, maroon, brown, green, etc.
That’s why it’s called agate petrified wood, or wood agate for short.
However, due to the current limitations of the sandblasting process, the petrified wood processed by that method needs to be sprayed with water or wax to achieve the smooth finish of grinding and polishing materials.