The next day, Xu Xin began to implement his prospecting plan.

It is illegal to mine gold privately.

But Xu Xin didn't plan to steal and mine gold, but to go for a walk in the mountains, and no one could control this kind of thing.

If a gold deposit is really discovered, he will go through the formalities that should be set up and what formalities should be required.

The first task, advanced mountain.

He told his mother that he wanted to use the car, so he drove his mother's red Lexus to the headquarters of the Yantugou bauxite mine.

If I don't touch the situation of the Huangjiang gold mine, I always feel that there is something lacking in my heart.

He said hello to Qin Pang Qing, Song Yizong and others, and sent a technician to follow him.

After all, in this season, mountain poison snake venom activities are frequent, for safety, according to the standards of geological work, at least two people do field work.

Arrive at a position about two hundred meters behind the headquarters and open the horizon of stratigraphic analysis.

Set the system options a bit.

Select the single option Au content and set the unit to grams per tonne gold ore.

In general, placer gold mines are used in grams per cubic metre and rock gold is measured in grams per tonne.

The gold mines of the old riverbed, covered with new rock formations, can be said to be rock gold, but it is still placer gold in the strict sense.

Set the depth to a maximum depth of 500 meters.

Quaternary floating soil......

Breccia......

Pebbles......

Sandy mudstone ......

The strata extend downward layer by layer, penetrating to a depth of 500 meters.

In the field of vision, a section of the section was formed, and the outline of the riverbed appeared in the line of sight.

As the lithological pattern of each layer changes, there is also a constant flow of gold content data.

Au grade: 0.004g/t

Au grade: 0.0032g/t

Au grade: 0.0014g/t

Au grade: 0.0003g/t

……

The surrounding strata have very low gold levels, even close to zero in some places.

It wasn't until the bottom of the riverbed that it was discovered that the average gold content was:

Au grade: 0.0131g/t

This gold content is many times higher than that of the surrounding strata.

However, by the standards of gold placer mining, it did not even reach the boundary taste.

However, this is a positive phenomenon.

Xu Xin played the compass and began to move along the southwest direction of the deposit.

In his line of sight, the gold content at the bottom of the riverbed was constantly changing.

In the field of view, the automatically drawn section even occasionally appears with a reddish dot.

This is a sign of ore seeing.

However, it is only a border taste, and the scope is small, not large-scale, and there is no mining value at all.

These discoveries gave Xu Xin greater confidence.

The riverbed on this ridge is definitely very much connected with the Huangjiang River.

As Senior Yan Peng guessed, there is a high probability that this is the runoff of the old Huang River, and it is the upstream section of the New Huang River.

Perhaps it is because there are no conditions for the deposition of golden sands, and there is no phenomenon of gold enrichment.

There is no hurry.

The bride has already entered the cave room, and it is only a matter of time before the red hijab is lifted.

Heijin Province is a karst landform, more than 90% of the surface is mountainous, the mountains are continuous, and the roads are difficult to travel.

Xu Xin took a technician and walked all the way down the ridge.

Moving roughly southwest, the outline of the riverbed is always visible in sight, and in some places the riverbed is even bare to the surface, or even weathered and eroded.

After walking more than ten kilometers, a large valley suddenly appeared in front of me, and the distance from the opposite mountain was probably two or three kilometers, and the valley was very deep, and it was not easy to climb down.

In his sight, Xu Xin could no longer see the location of the riverbed.

Because the distance on the other side was too far, he couldn't see if there were any riverbed ruins on the other side.

Seeing that the time is not early, I am afraid that it will be dark when I climb down the valley and up the opposite mountain.

As a last resort, they can only return the same way, and tomorrow will be considered in the long run.

When he returned to the mine headquarters, the room that had been arranged for him was still there, so he stayed in the mine and just called his mother to say it.

After dinner, he opened the map and looked at the situation on the other side of the valley.

There was a concrete road that went around from the headquarters to the other side of the valley.

The next day, with a technician, he arrived very early on the other side of the valley that he had seen yesterday.

However, the riverbed is gone.

In the horizon, the strata are very regular, and there are no abrupt arc-shaped riverbed contours.

That's the trouble.

What to do?

If you want to continue to trace the direction of the deposit, you must find it again.

Xu Xin changed his strategy.

The Lao Huang River originally flowed from the northeast to the southwest and flowed into the new Huang River in the county seat of Huangshui.

Now that the riverbed is gone, the simplest recourse is out of work.

He decided to pull the profile from the southeast to the northwest, which happened to be perpendicular to the runoff of the Lao Huang River.

As long as the riverbed remains, sooner or later they will be able to see the riverbed again on the profile!

However, after a day of running, they were disappointed.

The riverbed never reappeared.

It's not just that there is no riverbed found within a radius of tens of miles near the valley.

They approached in the direction of Huangshui County, and also pulled no less than ten sections along the convenient road.

The riverbed is gone.

It's like it never showed up.

To comfort the soul, the gold ore content on the dozen or so profiles that ran out is generally about 0.003g/t, which is a much higher value than other places.

The gold content of this land is obviously abnormal.

Xu Xin has a speculation that the old Huangjiang River has been weathered and eroded by geological movements in the more than 100-kilometer riverbed near the county seat of Huangshui.

The golden sand at the bottom of the riverbed is also diluted to this land within a radius of 100 miles along with surface water and groundwater.

The topography around the Huangjiang River is low in the middle and high at the end, and the water flows into the Huangjiang River from a high place, which basically brings most of the Jinsha into the Huangjiang River.

That night, Xu Xin lay alone in bed, tossing and turning.

Outside the window, the night sky in the mountains is pure, and the sky is full of stars.

When he was a child, his father used to tell him stories about geology.

He said that the geological people are lonely walkers, always wandering in the uninhabited mountains, like a group of lonely ghosts.

The number of mine sightings is often much less than the number of times you return empty-handed.

The discovery of each mine is a collection of hard work, sweat, luck, time and place, all of which are indispensable.

As a geology, if you can't find a mine, you should not be discouraged, but you should sum up your experience and make persistent efforts.

Many geologists never see a major mine once in their lives.

However, Xu Xin was unwilling.

I always feel that the Wengjiang gold mine is close at hand and within reach.

But when I reached out to lift its veil, I realized that it was just a dream, out of reach.

It's been almost a week, and he doesn't want to give up.

Early in the morning, he got up early, ate a big bowl of noodles, and came to two hundred meters behind the headquarters again.

It's time for a change of direction.

Heading northeast along the riverbed, perhaps the primary gold mine is still further upstream of the Laohuang River?

In the spirit of not admitting defeat, he took a technician and continued to climb the mountains and cross the thorns.

Ten kilometers ......

Twenty km ......

Thirty km ......

Fortunately, the riverbed in this direction has not disappeared and is well preserved underground.

The gold content at the bottom of the riverbed is also very stable, neither high nor low, and can barely be used as a clue to find gold deposits.

After three consecutive days of climbing mountains and mountains, the technician who followed was angry and directly applied to Song Yizong to do other work.

The technicians under Song Yizong all followed Xu Xin to climb the mountain, and they all knew the terrible thing about Xu Xin climbing the mountain.

Whether it is a cliff or a water current, rampage, courageous, never thought of detouring.

He really couldn't find a technician to follow Xu Xin, so he had to go out on his own and climb the mountain with Xu Xin.

Fifty kilometers from the headquarters, they stood high on a cliff, looking down.