My system is not decent

Chapter 1224 Why is it Listed as Tribute Land

The study of blue and white cobalt materials, especially Sumali green materials, means that in addition to physical and chemical perspectives, there must be internal causes of deep structural changes in history.

And this internal cause, how sure is it to be mastered?Can a reliable distinction be made?

And this is exactly what cannot be given a clear answer in the comparative test of kaolin and macang soil.

For example, macang soil is also kaolin in essence, and its composition is not much different from the current kaolin.

From the test alone, no obvious difference can be seen between the two, but the fetuses made are different. Can you say that the two are the same thing?
For another example, if the hair of Chinese and foreigners is black or yellow, there may not be any obvious difference according to the test, but can it be said that they are all from the same country?
Also, where is the kiln site for taking materials for testing?

Where was it unearthed?What kind of utensils are based on?
How representative?All are worth pondering.

According to general chemical analysis, this Soviet material contains low manganese content, which is opposite to the high manganese content of domestic materials.

After the material is fired, it shows the most unique uniqueness in the glaze layer:
The color is rich and gorgeous, with a slight purple meaning, and the coarseness of the particles is very distinctive.

Coagulation spots and halo, scattering, and flow phenomena are unique.

The condensation spot phenomenon is much more important than the crystallization spot (iron spot) phenomenon, and the crystallization spot may or may not be present, but the condensation spot cannot be absent.

The so-called agglomeration spots are black spots formed by the aggregation of pigment pigments during the firing process, which are distributed in the blue pattern.

These dark spots are all composed of smaller beaded black spots like small grains of rice.

And extend in a certain direction in a series or diffusely gather at will, or extend into strips, or form larger round spots.

And because of these bead-shaped small black spots around dizziness or divergence, or with dripping phenomenon.

Its halo is like blurring, its looseness is like diffuse, and its flow is like dripping, which are called dizzy, scattered, and flowing phenomena.

Strips of bead-like black dots are called striped diaspora, and round spots are called patchy diaspora.

Some flow, and even the bottom edge of the pattern forms a jagged or ice-hanging state.

There is also a special phenomenon, that is, there is a sense of swelling on the surface of the glaze.

That is to say, the fluid formed by condensation spots floats to the upper part of the glaze layer, that is, the black spots float upward, while the light blue remains at the bottom.

Sumali green materials are scarce and precious, and it is normal and common for most non-high-quality goods or general high-end products to be mixed with domestic materials.

Of course, this will also make Su Ma out of green materials, reduce blue or purple, and turn to black or gray-black tone. At this time, it should be distinguished from pure domestic materials.

In addition to Soviet materials, what kinds of pigments were actually used in the Yuan Dynasty?

In the Yuan Dynasty, domestic materials were also used less, because only high-quality porcelain would use fully imported Su Ma Li Qing materials.

At that time, Shi Ziqing and Pingpingqing were already in use in China.

These materials are often used more in kilns in certain places.

In addition, Huiqing material was also used from the Western Regions of the Yuan Dynasty, and it is also regarded as imported material today.

The characteristics of these utensils using domestic materials and Huiqing materials are more complicated.

The effect of using domestic materials alone is not good, and the phenomenon of cohesive spots and beading is not typical, and the color is black, gray and blue and sometimes slightly green.

This kind of domestic material black gray blue and Sumali green material are completely different in black gray blue due to poor firing.

Even if the Soviet material is not fired well, it can be seen that there are particularly obvious beaded condensation spots in it if it turns gray and black.

However, purely domestic materials, black gray blue lacks the phenomenon of beading.

Here it is especially necessary to clarify that the black ash of two different materials should not be regarded as the black ash of domestic materials.

This will cause mistakes in machine inspection and sampling, which will lead to imported materials.

Huiqing material is scattered but not gathered, the blue color is thicker, slightly purple or has the color of Su material.

But its characteristics of scattered but not collected are just the opposite of Su materials.

It only has dark spots without spots, and diverges, no beaded combination, and the particles are not as thick as Subny green material. These conditions need to be mastered separately.

The above-mentioned pigments, Sumaliqing material, disappeared after Ming Xuande, and the rest were used up successively in the Qing Dynasty, becoming the only one.

It is impossible to imitate the above-mentioned pigments in modern times, and the modern pigments have become extremely fine, and after firing, they do not have the beaded coagulation spots and dispersion in the natural state of the Yuan Dynasty.

To distinguish between true and false, the characteristics of the paint are the most important. If you don't understand the paint, you have no way to start.

For a utensil, see through the paint, and the rest will be solved.

The paint is wrong, and the shape is useless.

In the past, due to the limitations of the times, it must have been difficult to find the extinct Su Maliqing.

However, now is the era of the global village. Is it really difficult to find some raw materials unique to foreign countries?

It's just a question of how much to pay, as long as you pay enough, what can't be found?

Chen Wenzhe knew that some domestic masters had found raw materials for firing various ancient porcelains, and all of them were "sourced locally" at the kiln mouth according to the characteristics of each kiln mouth.

The antique porcelain produced in this way can be said to be completely retro-crafted, so if the perfect antique porcelain cannot be fired, is there any reason?

Of course, firing Yuan blue and white is not so simple, because in addition to pigments and crafts, there are also fetal soil and carcass crafts.

Because these characteristics in Yuan blue and white are unique.

According to legend, the blue and white porcelain bodies of the Yuan Dynasty were made of Macang soil from Macang Mountain near Shijing Town in the Yuan Dynasty.

In Chen Wenzhe's view, this is a legend, because the production process of Yuan blue and white was kept secret at that time, so few people know the specifics.

Up to now, we can only rely on legends to analyze the production process of Yuan blue and white.

However, the characteristics of Ma Cang soil are still very clear.

After firing, this kind of soil is crystal clear, warm and soft, and feels slightly smooth to the touch.

It is completely different from the modern kaolin fired.

This object was very precious in the Yuan Dynasty and was used as tribute soil by the royal family.

It is the same no matter which period this point is in.

For example, the firing of Ru Kiln porcelain, how agate is glazed, and how agate is glazed, who can say clearly now?

There is also the secret color glaze, which is called the secret color. Naturally, the secret information is well done.

Yuan blue and white craftsmanship is kept secret, there is nothing to say.

However, Ma Cang soil was very precious in the Yuan Dynasty, which is very debatable.

Because Macang soil is dug out from Macang Mountain, how precious can it be said that the minerals that can be mined are precious?
Besides, the mining of macang soil is not very difficult, and there is no need to dig under deep wells. Not to mention the danger, the cost is very high.

At that time, manual mining was used, and Ma Cang soil would not be considered a precious treasure among the Yuan royal family.

If it is said that the quantity is scarce, it can be justified. However, Ma Cang soil was not mined until the Ming Dynasty, which shows that there were still large reserves in the Yuan Dynasty.

So why was it so precious in the Yuan Dynasty?Even listed as tribute soil?

The only possibility is that post-processing is cumbersome, and there is even very little hemp warehouse soil available after processing.

This point can be known from the use of Ma Cang soil in the Yuan Dynasty.

(End of this chapter)