Wei Ergou drank a 300 ml bottle of mineral water in one gulp, which should be accurate to say that it was poured directly into his own stomach, and the way was very unique, because he didn't swallow in his throat, and the water was poured directly into his stomach. This reminds me of Pan Changjiang's stunt, swallowing two catties of mineral water in one gulp.

"Why do the ancients say well" gold and jade are hidden in the deep mountains and rivers", gold and jade is the essence of mountain and water condensation, when gold and jade are just born, they are as soft as cotton, and they slowly harden after seeing the wind. Therefore, to find placer gold mines, we must first find the main ore vein, which is the legendary gold vein. In 1988, the gold troops fighting in the Xing'an Mountains found a huge "dog-head gold" that shocked China. The gold weighs 2,155.8 grams and contains more than 70% gold. At that time, Yao Jinfeng, who was guarding the fifth detachment of the gold panning chute in Xing'anling, was about to call it a day, when he suddenly found a stone stained with mud and sand in the chute, and was about to pick it up and throw it away. The careful Yao Jinfeng put it in the water and washed it. In this wash, the stone in his hand turned into a shining golden lump, whose shape resembles the Chinese territory, also known as "territory gold". It takes 200 million years for the dog's head gold to gather into 2 kilograms, and there are no more than 10 pieces of dog's head gold of more than 1 kilogram in the world. This world-class "territory gold" has become the pride and pride of the soldiers of the armed police gold unit. By the way, Zhang Xiaosheng, do you know what kind of gold we Guangxi people are panning for gold in Ghana, I just talked about the classification of natural gold. You have to be clear about our goal of panning for gold," Wei Ergou was tired, and sat cross-legged against the huge tree.

"I know, Li Mengmeng mentioned to me that Guangxi people are mainly engaged in gold placer operations here." I also sat down cross-legged against Wei Ergou.

"Then why don't we mine rock gold?" Wei Ergou turned his head to look at me, he took out a bag of sulfur from his pocket and scattered it around us, just like Sun Wukong used a golden hoop stick to draw a circle for Tang Seng, I knew that he was preventing us from sitting on the ground and waiting for insects to crawl over and bite us, at this moment I understand why we have to carry a bucket of sulfur in our pickup.

"I really don't know this, in fact, I also want to ask, because you said earlier that rock gold is the main vein, and placer gold is formed by the weathering of rock gold particles or the movement of the earth's crust or the alluvial of rainwater to other places, so it stands to reason that the yield of rock gold is high." I grabbed a small yellow twig from the ground and formed an arc of the sulfur scattered by Wei Ergou, surrounding us in the middle.

"Haha, it's not that Lao Tzu doesn't love money, it's that Lao Tzu can't move! The investment in rock gold mining is too large, and it requires huge equipment, and a machine to crush gold and stone will cost tens of millions. Only the investment in placer gold mining is small, which is suitable for ordinary people like us. Wei Ergou said self-deprecatingly.

"Oh, I see!" Indeed, generally speaking, mineral mining is generally engaged in by state enterprises or giant enterprises, and the Shanglin people of Guangxi, as individuals, are indeed a combination of various factors behind the battlefield opened up by the people of Ghana.

"First of all, Ghana has four gold belts, almost all of them parallel, and this formation makes the whole of Ghana theoretically full of gold, because over hundreds of millions of years, gold and all of it has spread to all regions with these four gold belts. Generally speaking, the main veins are distributed in strips along the river valley, which are affected by natural conditions such as the mountains on both sides and the slope of the river valley. The placer gold reserves of the main veins account for about 80% of the placer gold reserves of the entire valley. The gold ore on the edge of the main mine is the so-called side mine, which is relative to the main ore vein, around the main ore vein, can reach about 20% of the total reserves of the valley, the main characteristics are that the stratification is not obvious, the color of the gold sand is disorderly, at least two colors are mixed period, each color of the gold sand can be annihilated at any time, the gold particles are significantly increased compared with the main vein, and the medium particles are greatly reduced, mainly with large particles, supplemented by fine particles, and the fine particles are finer. The cleanliness of gold is not good, there are often black and brown and other adhesive paper substances attached to it, the color of gold is mixed with red and yellow, there is a mixture of gold and stone such as quartz, the roundness of gravel is not good, there are more clay substances, the grade is high and low, it belongs to the nest work, the local grade can be particularly high, more than the main vein, but the range is generally small, maybe 3 days to dry, maybe half a month, the rich ore is finished, maybe the grade can not reach the mining value immediately. In short, the grade of the edge ore is extremely unstable and the change period is short. And the mountainous area that Erijia brought us to is on the Asati Golden Vein Belt in Ghana, and I looked at the positioning coordinates of my mobile phone when I got off the pickup, and the three in front of it are theoretically Yanjin Mountain," Wei Yiyun said at length, and Wei Yiyun and I both sat quietly on both sides of him and listened. ”

"The edge of the mine is mainly what we call a placer gold mine, and its formation mainly depends on three factors: placer gold supply source, hydrodynamic conditions, and geomorphological characteristics. The distribution of most placer gold deposits is closely related to rock gold deposits, and most of the placer gold metallogenic areas are distributed in ancient basement strata with high gold abundance and denudation areas of large areas of intrusive rocks, and placer gold deposits are distributed in a linear manner along the direction of the main tectonic line. Placer gold deposits are concentrated at the edge of fault basins in the uplift area, and the transition zone between the uplift area and the subsidence area is often the metallogenic area of placer gold deposits. The relationship between placer gold ore and water flow dynamics, placer gold ore is formed by the enrichment of gold-bearing geological bodies in appropriate parts through weathering and denudation, and the transportation of flowing water. Therefore, the water flow dynamics is very closely related to the enrichment and distribution of placer gold. At the same time, it is also one of the important conditions for the formation of placer gold. All in all, I have summarized one sentence by myself, once upon a time there was a mountain, and there was rock gold on the mountain. There is a ditch at the bottom of the mountain, and there is placer gold in the ditch. Wei Ergou said a lot, and I understood the last sentence.

"In the words of our connoisseurs: there is a concave in the long, and there is a concave in the concave; The big ditch should have legs, and the small ditch should have a mouth; The ditch is flat and wide, and the side hills are flat; There is a row next to it, and there is a seat in the back; Yingmen Mountain, close the door mouth; If you don't dig gold to the end, you will waste two buckets of rice in vain; The weight of gold is returned to the hole; Kowloon will be the head and can not go any further. "Wei Ergou said a lot of words like martial arts mantras, and I was completely blindsided and didn't want to delve into the meaning of these awkward terms." The black boy on the tree, Ariga, he said that the gold mine is in the middle of the mountain, it is nothing more than to judge the middle of the concave in the long, the typical only knows one and does not know the other, according to his words, there will indeed be placer gold in the middle of the three mountains, but the content is certainly not high, in addition to looking at the mountain type, but also look at the mountain, I shouted in the direction of the three mountains, the volume and speed of the echo are subtle changes, which shows that the three mountains are not the same, we are looking for Yingmen Mountain, close the door. The mountain on the far left has the loudest echo and the fastest speed, indicating that the mountain has an arc-shaped fan, and the more gold washes down, and the echo of those two mountains is very small, I later tried it with a pistol, and the effect is the same, which is why I chose this mountain, of course, I am talking about some of the reasons, and the others are more esoteric, and you may not understand it at all. Wei Ergou went around in a big circle, and finally explained the reason why he went crazy on the stone slope.

"So, you look at the mountain in front, its slope arc is facing this forest, that is, a large amount of gold placer will alluvial down to this forest with this fan, our next task is very simple, you know what we are looking for next, right?" Wei Ergou looked at me, looked at Wei Yiyun.

Wei Yiyun and I said in unison, "Ditch! “

"That's right, the beauty looks at the ditch and the gold also looks at the ditch, which is called "panning for gold in the ravine, dreaming of death in the milk hook"! Wei Ergou said the quotations of Ergou that he summarized.