Liu Yanyan continued to ask, "Then do you know how the python belt is formed?"

Yang Hao combined the knowledge of jadeite texture that he had recently learned, and said: "Because the jadeite rough is formed at different times, it also causes differences in the structure and composition inside, and the difference in weathering occurs in the weathering process, the dense structure is stronger than the coarse-grained loose structure, and the green part is stronger than the colorless part of the weathering resistance, so compared with the base of the colorless and light-colored coarse-grained loose structure, the green part of the fine-grained structure is protruding, and the jadeite rough python belt is formed." ”

"Very good!"

Liu looked at Yang Hao with some surprise and added: "In addition, the appearance of the python belt is in the later stage of the formation of jadeite, under the action of hydrothermal and dynamics, the directional recrystallization of the original rock and the chromium element enters the jadeite in a certain direction in this process. ”

Yang Hao asked: "Master, when I was mining jade in the mining area before, I found that some of them looked like python belts but found that they had no color, what is this?"

Liu Yiyan replied: "It's a python belt, many people think that as long as there is a python belt, it means that there is a color, but in fact, the python belt can be divided into two kinds, one is a color python, and the other is a kind of python." ”

"Pythons and pythons?"

Chen Song and Yang Hao looked at Liu suspiciously.

"Tell you about it, and you'll understand!"

Liu Yiyan said slowly: "The colored green bands are mostly the result of the transformation after the diagenetic period, and the transformation after the diagenetic period is first of all the jadeite rock deformation and rupture under the action of gravity, and then the hydrothermal intrusion containing chromogenic ions carries out ion metasomatism to form a green band, so the colored bands are mostly deformation fracture zones, and this fracture zone continues to crumple and recrystallize under the action of stress and hydrothermal fluids, forming a dense curved jadeite rough ribbon, and finally reflected on the weathered shell, that is, the python belt we see. ”

"It means that the color of this python belt is not congenital, and it belongs to the later formation?"

Yang Hao came to some realization.

"Well, the python that corresponds to the structural change, and the python that corresponds to the color change. ”

Liu Yiyan walked directly to a piece of rough stone, pointed to a python belt raised above, and said: "This is a kind of python, you look at the surface of this rough stone, the better the area, the better the texture, its strong resistance to weathering, the same external conditions, the rest of the part is weathered to concave, and the good texture of the part is convex, because of the lack of hydrothermal invasion containing chromogenic ions, so it can only become a kind of python." ”

Chen Song and Yang Hao nodded understandingly.

If it is colored, it is called a color python, and if it is colorless, it is a kind of python.

Chen Song suddenly asked: "Master Liu, the weathered shell of this rough stone has not been removed, and I don't know if it has a color, how can we tell if it is a color python or a species python?"

"It's easy to tell the difference between a colored python and a seed python!"

Yang Hao said with a smile: "I studied it for a long time before, and later found that the python belt looks like a tendon, and there is no color inside. ”

Chen Song glanced at the python belt that Liu glanced at, and found that it was really like a person's green tendons, and like a blood vessel, it was protruding outward, looking uniform as a whole, and the arc was very small.

Liu Yiyan pointed to a raised python belt on a rough stone next to him, and said: "This is a colored python, this raised python belt indicates that the green part of the jadeite rough is more detailed in structure and the water head is better than the surrounding colorless or light-colored texture." ”

Then he pointed to a concave groove on the rough stone next to him, and said: "This concave is also a color python, which is just the opposite of the raised one, and the texture of the green part under it may be looser than the surrounding texture, and it may also contain cracks." ”

Chen Song was stunned.

Isn't it true that these python belts are all raised?

After careful identification, it was found that although the groove was concave, the middle of the depression was slightly convex, and combined with the groove crack on the weathered shell of the original stone just seen, it was instantly understood.

Compared with the base of the colorless and light-colored coarse-grained loose structure next to it, the green part of the fine-grained structure protrudes and forms a colored python.

"Generally convex zigzag veins distributed on the surface of the weathered shell, like a python coiled are python belts, python protruding on the surface, delicate and smooth, touch with your hand will not feel rough, green in the jadeite rough bulge is good green, in the recess of the green is worse, so the python's shape, color, direction, tendency is an important symbol to judge the green change of jadeite rough. ”

Liu Yiyan said with a smile: "The jade world said that it is better to buy ten drums, not to buy a deflated, to buy a line not to buy a large piece, according to the characteristics of the green shape in the jadeite rough, the python belt represents a line, a line of belt green and a large piece of green by the skin is the same green shape of the two manifestations of the difference, is the difference between linear and piece, the thickness of the line is known, and the depth is unknown, and the area of the piece is known, and the thickness is unknown, this line of python belt, the probability of rising is naturally much higher than a large piece. ”

Yang Hao asked, "Master, isn't it true that the rough stone with a python belt will not be bad?"

Liu Yiyan nodded and said: "Yes, the python belt is an important basis for judging whether the jadeite rough has color and color distribution status, where there is a python, it is often colored, and it is liked by lustful jade merchants, and some jade merchants only like to buy jadeite rough with python belt, which also causes the price of such jadeite rough wool to be higher and higher." ”

Chen Song asked: "Is this python belt divided into two kinds of pythons and seed pythons?"

"Of course not, this python belt can be divided into many kinds according to color and shape, in the past, when people looked at pythons, they only analyzed from the phenomenon, and did not study from the essence, in fact, the performance of pythons is different in nature, and the difference in performance under the action of the same external force. ”

Liu Yan walked to a piece of black black sand rough and stopped, pointed to the gray-white python belt like a tendon on it, and said: "This piece is Lao Pakang's black black sand, and the above one is the white python." ”

Black stone, white python belt?

Chen Song asked curiously, "Master Liu, how did this white python come to be?"

"White python is jadeite in the process of primary ore formation, local albite crystallization by the later hydrothermal action, local crystalline particles into thin bands of directional hydrothermal action, when this part of the original ore is destroyed into a block, by the surface wind, rain, cold, heat changes and rolling process abrasion, etc., due to different fineness of albite on the surface of the formation of differential weathering and a phenomenon. ”

Liu glanced at the white python on the rough stone, and continued: "The white python is the weathering reflected in the jadeite rough with finer particles in the form of a band, and it is generally gray and gray-white on the weathered shell, and there are also block-like distributions. Like this one, a gray-white python on a black stone is the best performance. ”

"This piece is also a white python. ”

Liu Yiyan pointed to a piece of rough stone with a white body.

"Where is this white python?"

Chen Song and Yang Hao looked at the white rough stone over and over again, but they didn't find the location of the white python.

Liu Yiyan smiled: "Because the color of this white python is the same as the color of the white sand skin, it is normal for the naked eye to not see it, you can sprinkle some water on it." ”

Yang Hao hurriedly took the bucket from the side, picked up a handful of water in the bucket with his hand, and sprinkled it.

The white sand skin on the rough stone is instantly moistened when it encounters water.

Under the sun's rays, the water above is rapidly drying out again.

Suddenly, the white sand skin changes from wet to dry, and the irregular shape of a long strip gradually appears.

"Is this the white python on the white sandskin?"

The two of them looked at the white python belt that was getting clearer and clearer with some excitement.

Yang Hao said excitedly: "This water is really magical, it seems that in the future, when the original stone encounters difficulties, I can directly pour a bucket of water!"

"yes!"

Chen Song agreed.

Every time I encounter a stone that I can't understand, it seems that I pour water on it to solve it.

When Liu heard the words of the two at a glance, the corners of his mouth couldn't help twitching.

I've never heard of a Xiangyu master who poured water on Xiangyu to see it.

However, under the premise of not being able to understand this, water is a good auxiliary method.

Soon, the water on the white sand skin was evaporated, and the white python disappeared again.

Yang Hao hurriedly picked up a handful of water in the bucket with his hand, and just wanted to spill it, when he heard Liu Yiyan say: "Actually, you can identify it without sprinkling water." ”

"Uh...... What do you think?"

Yang Hao glanced at Liu in some surprise.

Why didn't the master say it earlier?

The water he was holding passed through his fingers and fell directly into the bucket.

Liu Yan shook his head and said, "It's not to see, it's to touch it with your hands!"

The two of them suddenly slapped their heads.

The python belt belongs to the convex or concave on the weathered shell, and there is an obvious drop between it and the weathered shell, so you can feel it with your hands!

At that moment, the two of them touched the rough stone with their hands, and soon felt the specific location and size of the white python on the weathered shell.

Suddenly, Chen Song saw that there were a few very small pine flowers on the white sand skin, and couldn't help asking: "Master Liu, there are pine flowers on it, but why are they so small, they are almost invisible." ”

Liu glanced at the pine flowers on the rough stone, and said: "The pine flowers on the python belt are based on the texture, and the pine flowers on this piece are so small, because the texture of this piece of material is very good, and the color inside is very positive. ”

Liu Yiyan pointed to the rough stone with a large change in the thickness of a python belt next to him and said: "This piece belongs to the ribbon python, and the pine flowers on it are also very small, so you need to look carefully. ”

Both Chen Song and Yang Hao paid attention to the position of this rough stone close to the middle, and faintly visible traces of fine concave traces that are different from the sandiness of the skin shells on both sides, showing a band-like distribution.

The length of the band spans two-thirds of the rough, and the thickness of the band varies from part to part, with very fine pine flowers on it.

"Master, what is this piece called?"

Yang Hao pointed to a rough stone not far away and asked.

The python on the rough stone is also ribbon-shaped, but the difference is that the python is covered with small pine flowers.