"Xu Xin, what are you looking for?"

After walking for most of the day, Song Yizong was soaked.

He never understood what Xu Xin was doing.

It's just stuffy scurrying around in the mountains, no record book, no instruments.

It seems that he is looking for gold mines, so he can collect some sand and gravel, and directly use the natural heavy sand method to screen out the golden sand, and judge the gold ore occurrence according to this.

No matter how many times he asked on the side, Xu Xin never revealed any information.

It wasn't until he came to the edge of this cliff that Xu Xin smiled and said, "Chief Engineer Song, based on your experience, do you think this place ahead will be a gold deposit?" ”

Beneath the cliff, a large slope with relatively gentle terrain appeared, overgrown with wild grass.

Beneath the weeds are scattered stones.

After Xu Xin's reminder, Song Yizong suddenly became interested, looking at the surrounding mountains and catching some clues.

While observing, he said: "Gold ore is the earliest metal discovered by human beings, and as early as ancient times, people have explored many ways to find gold mines, such as the "Pipe and the Several Chapters" It is recorded that 'those who have dansha on the top have gold under them'.

Later, people who took gold panning as their profession, after summing up a lot of experience, also put forward the saying of "three mountains" and "four not exposed".

The terrain of the valley in front of you is like a funnel, wide at the bottom and narrow at the top.

The mountains to the north are steep, and if there is a primary gold mine on it, it is possible to wash the golden sand down and collect it at the bottom after years of rain. ”

It's just a vast mountain and a deep valley, and he was stunned to sum up some secretive remarks.

I don't know if it's a fool's remark.

He is a geology expert.

Xu Xin didn't understand anyway, and said with a smile: "Mr. Song, you said bluntly, is it possible to have gold deposits here?" ”

Song Yizong smiled and shook his head, "You ask me so, how do I know?" ”

"If I say that there is gold under this rubble, will you believe it?"

Hearing this, Song Yizong was stunned, and wanted to say that he didn't believe it, when he first saw Xu Xin on the Yantugou bauxite mine, he despised the other party because he was young and made a lot of nonsense.

Now this hairy boy, looking at a barren land, is talking again.

As a senior geological engineer, should I believe this kind of unfounded braggart?

He laughed dryly, pointed to the large gentle slope under the cliff, and analyzed: "This place is obviously a high mountain collapse, and the rubble rolls down and gathers to form, from the surface, it is all limestone gravel, and it is really difficult to judge the situation underground." ”

This analysis is very reasonable.

He obviously couldn't see the depth of one or two hundred meters underground, and he didn't know that the depth of one or two hundred meters underground was actually an old riverbed.

In Xu Xin's line of sight, the system automatically drew a profile map, completely showing the strata of the valley in front of him.

In his eyes, what he saw was not a barren slope of rocks.

It's a huge riverbed.

This valley with a wide view may well have been a small lake in the past.

The entire riverbed of the lake has not been damaged by geological movements over the years, but has been preserved intact.

The entire riverbed looks like a huge iron pot, with a rounded arc drawn from the bottom.

After the Laohuang River flows into this small lake, the flow of the river slows down, and the golden sand, gravel, and fallen leaves carried by the river water are gradually deposited at the bottom of the lake.

In the upper reaches of the Laohuang River, there must be a primary gold mine, under the river water for many years, the gold is stripped out of the quartz vein, and under the influence of the river, it comes to this lake.

The density of the golden sand is relatively high, and it accumulates on this riverbed when the river flows slowly.

Above the profile in the horizon, a crimson ribbon representing the gold deposit is particularly dazzling.

Moreover, it can be seen that the bottom of the entire lake and riverbed, the gold content and the thickness of the ore layer exist in the middle of the high and the surrounding low.

In the deepest part of the lake's bed, the red color that represents the ore layer is almost red purple.

It appears that this is an alluvial riverbed placer gold mine.

And the content is very high.

In the center, there is even a point where the gold content is simply exaggerated:

Au grade: 1007.23g/t

That is to say, in the small area of one ton of sand, there are two catties of gold!

If this is dug up, it will be a golden light!

Or even a huge piece of dog's head gold!

Xu Xin tried his best to suppress the emotions that might explode at any time in his heart, and tried his best to keep his expression calm.

If there was no one around, he would have been in the valley for ten minutes to cry wolf!

Got it!

He found gold-rich deposits!

Of course, even if a placer gold deposit is found, this wealth so far does not belong to him, but to the state.

Individuals mining gold without permission is an act of illegal mining and a serious violation of the law.

To truly legally own this gold mine, you need to think long-term.

"Still moving forward?"

Song Yizong's words pulled Xu Xin out of the immersion in ecstasy.

Xu Xin grinned and nodded, "Keep walking forward and look ahead along the valley." ”

Judging from the placer gold deposits seen so far, the ore situation is very, very good.

It can be inferred that there is a very high probability that there is an even larger rock gold deposit upstream of this deposit.

The primary deposit of rock gold is the real treasure!

"Let's go, keep going."

Xu Xin also wanted to look upstream, if the primary gold deposits can still be found upstream today, it is really a mountain of gold and silver.

Judging from the placer gold deposit in front of us, the grade and reserves are calculated according to the standard of placer gold deposits, which is probably not low.

So how terrifying is the upstream primary mine?

If it is a large deposit of rock gold, it can be on the national rich list in an instant.

With a great daydream, he waved his hand, "Uncle, lead the way in front, and we will go up the valley." ”

Before coming here, they hired an elderly guide in a small mountain village nearby.

The old man was holding a firewood knife in his hand, and he was a little unhappy when he heard that the two men were going to walk down the valley from the cliff.

"In our place, we all call this valley the Valley of the Dragon."

"What's the story?" Song Yizong asked.

The old man recalled: "People of the older generation said that in the past, every household raised cattle and sheep, and when the cattle and sheep entered this valley, they could not go back. It is rumored that there is a dragon in this valley that eats cattle and sheep, and sometimes people go in and can't come back.

People in the vicinity, almost never come to this valley, there are no roads, and it is dangerous. ”

The old man was sixty or seventy years old, in good health, and he walked like a fly in the mountains.

I didn't expect to be a superstitious person.

Song Yizong smiled and patted the old man's shoulder, "Brother, there are a lot of us, it's okay." ”

The old man hesitated for a moment, but still took the lead in detouring and sliding down a cliff more than thirty meters high from a gentle slope.

Inside the valley, the gravel is craggy, and it is very difficult to walk.

After walking about a kilometer along the valley, they were almost hit by a stone that rolled down the mountain.

On the steep slopes to the north, rocks are broken and occasionally stones roll down.

The missing cattle and sheep were probably killed by the falling stones.