Xu Xin looked dazed.

In fact, he is looking at the stratigraphic analysis horizon.

When he just walked through the Diamond Native Mine No. 1, he had actually opened the stratigraphic analysis vision and kept staring at the ground.

However, because you have to talk to the people next to you, you can't focus on your vision.

So, until now, he had no time to view the results of underground exploration by the stratigraphic analysis horizon.

A cross-sectional view of more than 200 meters was suspended in his sight out of thin air.

Kimberlites, shale, dolomite, shale, clay rock, siltstone, quartz sandstone, siltstone...

Rock formations extend downwards.

Except for the surface kimberlite, everything is as usual in other strata. The diamond grade detected by the system is: 0 mg/cubic meter.

Among the kimberlites on the surface, due to severe weathering, it has become very thin, with only a shallow layer on the surface.

In thin kimberlites, the diamond grade is basically below 5 mg/cubic meter. This data shows that diamonds exist in kimberlites, but the grade is indeed very low.

"Boss Xu!"

Wu Fuyan's shout awakened Xu Xin from the immersion mode.

"What's wrong?" Xu Xin turned his head.

"It's comfortable to drive a good car. Otherwise, I'll drive it for Boss Xu in the future. Will Boss Xu lack a driver?" Wu Fuyan is a familiar person, and he always has a smile on his lips when he speaks.

Xu Xin knew that the other party was a joke and waved his hand, "Don't call me Boss Xu, it sounds strange."

"I'll call you Brother Xu. I'm born in July 2001. Where are you?"

"I..." Xu Xin didn't know how to answer.

"Brother Xu, you look very young, how do you take care of your skin on your daily basis?" Wu Fuyan subconsciously obviously believed that the mine boss should be all older people.

But after seeing Xu Xin's appearance, he was not sure of his age.

Xu Xin directly changed the topic, "Are you sure you can find the seven mineral search target areas you selected?"

Speaking of work, Wu Fuyan put away his hippie smile and said seriously: "After seventy years of mineral search, all the magma rocks exposed on the surface have been investigated over and over again, and there are basically no omissions.

If the seven mineral search target areas we re-selected accurately, there will definitely be no hidden invading rocks underground, which is what we often call "carrot-shaped" kimberlite.

In fact, there are some places where we did some electrical measurements some time ago and found the boundary of the rock mass. Judging from the measurement results, the rock mass is very similar to an invading rock, and it is most likely a kimberlite!

As for whether diamonds exist in kimberlite, it is impossible to make a judgment at present."

Kimberlite comes from the deep mantle and belongs to one of the invading rocks, which are very rare around the world.

Only a small part of the kimberlite is inlaid with diamonds.

It can be seen that diamond mining search work is so hopeless.

"Did you do electrical measurements? Have you set up a project here before?"

"A small project, that is, what happened recently, Mr. Song didn't know where he got hundreds of thousands of dollars. He gave it to our company for a simple measurement, and just collected some data."

Wu Fuyan said, feeling helpless: "You know that if you invest this little money in the exploration work, there will be no splash."

Xu Xin thought about it briefly and could probably guess the source of these hundreds of thousands of funds.

It is highly likely that He Xi wanted to verify some speculations and paid for electrical measurements out of his own pocket.

Electrical measurement can measure different lithologies and rock formation interfaces based on the difference in resistivity of the rock formation, and can roughly circle the shape of the rock mass, but diamonds cannot be detected at all.

During the chat, they arrived at the first mineral search target area.

A steep hillside with rugged rocks and weeds and bushes.

After reminding from He Penghui and others, Xu Xin knew that the lithology exposed on the surface of this area was dolomite.

Looking up, I found nothing.

There are no punctate kimberlite or potassium-magnesium porphyry, and I have never seen even a purple-red aluminum-magnesium garnet inlaid in the rock along the way.

No indicative features that can exist in diamond mines are seen.

No wonder the previous diamond mining search work did not involve these places.

In addition to the avionic abnormality diagram and the contour diagram of high-density electrical method, the naked eye cannot see that there is a need to find diamonds here.

In the hands of a technician in the 107th company, the numbers on the small screen of the Gauss meter are constantly changing.

It can be clearly seen that the magnetic induction intensity of this inconspicuous hillside is indeed relatively high.

For these geological experts, there is nothing to say about the geological conditions on the surface here.

If you want to really figure out whether there is really a hidden kimberlite rock mass underground, there is only one way to drill a hole!

Obviously it is impossible to do it now.

Xu Xin looked at the ground, as if he was staring at his toes in a daze.

The stratigraphic analysis vision is opened, and the line of sight penetrates various low layers all the way, looking at a depth of 500 meters underground.

In his sight, a professional, clear and clear geological section map slowly unfolded:

Dolomites...

shale……

Clay rock...

Siltstone…

Kimberlite…

About two hundred and thirty meters underground, the tip of kimberlite appeared.

The sight continued downwards and all I saw were Kimberlite.

Like most invading rock bodies, the kimberlite rock mass in front of us has a "carrot-shaped" shape, pointed at the top and wide at the bottom, gradually extending to the depths of the strata.

If it has not been destroyed in complex geological activities, this "carrot-shaped" kimberlite mass can be connected to the depths of the deep mantle and to the depths that humans cannot explore.

Every kimberlite mass is worthy of in-depth study because they carry matter from the depths of the mantle.

In the middle of the conical pattern representing kimberlite, the diamond content is indicated. If you click on a certain point with an arrow, it can even display a more detailed diamond content.

Like other mineral types, the corresponding strata locations will be marked with a red background color when the mine is seen.

However, in this section, no bright red glow was seen.

The feeling of floating in the dark underground like a ribbon is even more impossible.

Although there are no large red ribbons representing the ore layer, sporadic red dots appear on the rock formation representing the kimberlite.

These red dots represent local ore viewing.

Overall, it would be more accurate to say that it is mineralization.

Click the arrow on these red dots and the corresponding physical properties will pop up: diamond content is 30 mg/cubic meter...

There are actually quite a lot of red dots, and I can't check them all in a while.

On the kimberlite in the sectional view, the overall average diamond content is 8 mg/cubic meter.

The average value of this diamond content did not reach the boundary grade in the systematic judgment.

Until now, there is still no unified standard for diamond exploration work.

The specific number can reach boundary grade, industrial grade, different places, and different experts will give different standards.

Whether a diamond deposit is mined or not and is worth mining is often judged based on the value of diamonds on the current market.

If we aim to find gem-level diamonds with the work being done in front of us, then the standards they set for the mine inspection will definitely be very high.

One carat of diamond, weighing 200 mg.

How many tons of ore can find a gem-grade diamond that can achieve the economic benefits of mining?

This is a problem that requires in-depth research and calculation.

Everyone just walked around this barren mountain, and there were not many points to discuss except recording some magnetic induction intensity data through the Gauss meter.

In the work of finding hidden kimberlite bodies, ordinary geological methods no longer work.

They left the first point, walked westward and rushed to the next point.

As can be seen from the map, the seven mineral search target areas are almost all located between the Liuyang River and the Yuanjiang River, arranged from west to east, like the Big Dipper.

After reading seven points, the sky was already dark.

Especially the last mineral search area, which is located deep in the mountains and forests. When you walk from the mountain to the parking spot, the sky is completely dark.

After reading the whole day of outdoor work, you can summarize it in a few words: nothing is gained.

Long before Xu Xin came, Song Yizong, He Penghui, Wu Fuyan and others had traveled many times in these mining target areas, and even did some surface work.

I had expected what I could see today.

They brought Xu Xin over, with the main purpose of persuading Xu Xin to invest money in this project.

They also know that it is obviously unconvincing to look at it with your eyes alone.

But there is no way, and the fact is that diamond mine search is like a bamboo basket to fetch water. In a turbid water area, nothing can be seen. When a basket goes down, it often returns empty-handed.

But what if I caught a fish once?

They can only do their own technical work well. As for what decision Xu Xin makes, it depends on Xu Xin's decision.

In order to hurry, everyone just ate dry food at noon, but after a long journey, they were sweating profusely and couldn't eat too much of this kind.

At night, everyone was so hungry that their chests were pressed against their backs.

In the darkness, the cigarette butts between He Xi's fingers emitted a bright light. He sucked a sip of the cigarette, and said hoarsely: "Let's go to Zhenyuan County for dinner first. What's the saying? Let's talk about it after you have enough food and drink."

He was in his seventies and had been crossing mountains and rivers all day long. It was obvious that he was very troublesome, but he always showed great enthusiasm.
Chapter completed!