i have a small world

Looking at the dog's head gold which was the size of a human head in his hand, Xu Chang's face was full of smiles. If he sold such a large piece of dog's head gold, it would definitely fetch a sky-high price. ⌒★,
You must know that the value of dog head gold is not calculated by the value contained in it. Its artistic value completely exceeds the value of the gold contained in it. If the appearance of dog head gold is more novel, the value will be even higher.

For example, if a dog's head gold of about five kilograms is calculated based on the price of gold alone, even if the gold content of this piece of dog's head gold is 60%-70%, the value of this piece of dog's head gold is only about 100 million, but you If you really want to use 100 million to buy this dog head gold, it is definitely a joke.

If you want to buy such a large piece of dog head gold, it will cost at least 70 million. If the quality of this piece of dog head gold is better, like some animals or something, then the value will be even higher.

Maybe, 200 million, 300 million is not a problem.......

Xu Chang couldn't estimate the value of the piece of dog's head gold in his hand, but he knew that the value of this piece of dog's head gold was definitely not low.

If he had such a large piece of dog's head gold before he practiced martial arts, his whole family wouldn't have to worry about their livelihood for the rest of their lives. Therefore, the smile on Xu Chang's face now is simply out of place.

"Wow..., wow...!" The sound of digging came to Xu Chang's ears. Xu Chang turned his head and saw that it was the monkeys who were digging at the place where the dog's head gold had just been found. Xu Chang soon understood, Monkey and the others wanted to look for dog head gold in this pit again.

Due to the great strength of Xuchang.In addition, this piece of dog head gold was indeed made by Xu Chang alone, so.People like Monkey didn't dare to hit Xu Chang's mind, but.The temptation of the dog's head gold is really too great, so the monkeys began to dig in the place where the dog's head gold was just discovered.

The dog's head gold was found in this pit, maybe there will be dog's head gold in this pit, or around it. Thinking of this, people like monkeys can't bear it.

Although the people looking at the monkeys were panting in their mouths and their faces were covered with beads of sweat, they did.Still digging selflessly in the pit, Xu Chang shook his head lightly, but Xu Chang didn't say anything about what the monkeys did.The biggest end has already been obtained by myself, and it is only natural to share the leftovers with others.

People who eat alone will be cast aside and hated by everyone.Although Xuchang's culture is not high, but.He still knows how to share these two words.

"I dug it, I dug it, the dog's head gold...!" At this moment, a pleasantly surprised voice came from the pit.Then Xu Chang saw a man covered in dirt who got up from the pit in a hurry with a fist-sized fist in his hand.Under the sunshine, the pimple exudes golden yellow light.Xu Chang took a closer look and exclaimed: "It's really a dog's head gold...!"

Although this fast gold nugget is only the size of a fist.However, it was really a piece of dog's head gold, which made Xu Chang a little excited. After only half a minute of digging, someone found a fist-sized dog's head gold. Does that mean that in this area? Under the land, there are more dog head gold.

Thinking of this, Xu Chang couldn't bear it any longer, and went directly to the other side of the pit, and began to dig vigorously with the hoe he just found. Facing such a huge temptation of profit, as long as he is a normal person, he will not be able to bear it. Residents get involved.

With the person who dug the dog's head gold again as an example, people like monkeys would not care about other things. They once again devoted themselves to digging the dog's head gold, so that those who are still beside the fishing boat, A little impatient to wait.

Soon, Leng Xin and the others became impatient, and they all walked towards Xuchang.

"Hey, what are you doing?" As soon as they walked into the place where Xu Chang and the others were, Leng Xin and the others found that Xu Chang and the others were actually digging, which made Leng Xin and the others full of doubts.

"It's digging dog's head gold, don't bother us, if you want to make a fortune, just find a place to dig by yourself!" Hou Zitou replied indifferently, now is the time for treasure hunting, and he doesn't have much time to care about other things .

"Digging dog's head gold? This... this..." The monkey's answer made Leng Xin confused, what dog's head gold, what is this?
However, soon, Leng Xin knew what the dog's head gold that the monkey was talking about was because Leng Xin had already seen the head-sized piece of dog's head gold that Xu Chang put aside.

Under the sunlight, this piece of dog-head gold exudes an extremely charming golden light. The golden light is like the forbidden fruit that tempted Eve and Adam in the Garden of Eden. The golden light walked, reaching out to hold the charming golden light.

However, just when Leng Xin's hand stretched out a few centimeters towards the dog's head gold, a burst of coldness came directly to Leng Xin's heart, which made Leng Xin wake up all of a sudden, and he looked in the direction of the coldness. Go, only to see Xu Chang looking at him with a sneer on his face.

Facing Xu Chang's sneer, Leng Xin subconsciously withdrew his hand. He soon understood that this huge piece of dog's head gold belonged to Xu Chang.

"Md, if you weren't a quasi-warrior now, such a large piece of dog's head gold would be yours?! If I still have martial arts, this piece of dog's head gold would be mine."

Although Leng Xin withdrew his hand, he was extremely unbalanced in his heart. He thought that Xu Chang had taken the dog's head gold from other people's hands by relying on his powerful force. The interests represented by the dog head gold made Leng Xin, who was originally narrow-minded, extremely jealous of Xu Chang, and even at that moment, Leng Xin put his hand into his chest.

Inside Leng Xin's chest was hidden the 'Desert Eagle'.

However, just as Leng Xin put his hand into his chest, a sudden killing intent enveloped Leng Xin, and this killing intent was only strong.It directly made Leng Xin cancel the next move.

Leng Xin knew very clearly who came from this strong killing intent.Facing Xu Chang's threat, Leng Xin didn't dare to act rashly.

"What's the matter. Leng Xin, do you still want to do something?" Xu Chang sneered to expose Leng Xin's dark thoughts.

"Hehe..., how could it be, why would I want to do it, brother Xuchang, don't get me wrong, I just felt a little itchy on my chest, that's why I put my hand into my chest, I want to Scratch the itch, brother Xuchang, don’t get me wrong.”

Leng Xin explained with a resentful expression.And in order to increase the credibility of his statement, Leng Xin also used the hand that stretched into his chest to scratch the itch in his chest, and showed a very comfortable look on his face, as if he had Leng Xin just now. It's really itchy.

It's a pity that Leng Xin's excuse is too lame, don't say that Xu Chang doesn't believe it, even monkeys now look at Leng Xin with a look like you think we are fools, which makes Leng Xin a little embarrassed.

"Okay. I don't care if you put your hand into your chest because of scratching or for other reasons, Leng Xin, you are not welcome here. You should leave here. Staying here will only increase our Feeling of insecurity. Leng Xin, you go!"

Xuchang directly issued an expulsion order.Leng Xin is too dangerous, Xu Chang is really worried about turning his back on Leng Xin.However, Leng Xin also had weapons that could threaten Xu Chang, so Xu Chang drove Leng Xin away when he couldn't do anything.

"Yes, Boss Leng, it's better for you to leave here, so as not to cause any misunderstandings. Boss Leng, if you want gold, go to another place to dig. The area here is too small to accommodate Boss Leng. You are such a 'big' person."

With Xu Chang taking the lead, other people soon began to make noises to chase Leng Xin away. Among them, the monkey's words were the most hurtful. When the monkey said the last few words, his tone became more serious. It is the word 'big', with the strongest tone.Obviously, the monkey was mocking Leng Xin.

Facing the words of everyone shouting for him to leave, Leng Xin's face was full of anger, and the murderous intent in his eyes seemed to materialize. If Leng Xin's eyes could emit laser light, the things in front of him now People have absolutely become pieces.

Looking at Leng Xin's eyes of wanting to eat people, the few people who were very happy just now couldn't help lowering their heads. After all, Leng Xin has been the boss of these people for a long time, and in the hearts of these people, he still exists. There was a trace of fear of Leng Xin, the boss, so when they saw Leng Xin's eyes that wanted to eat them, these people couldn't help but shrink back, including the most powerful monkey who ridiculed Leng Xin.

However, Xu Chang is not a monkey. He has no fear of Leng Xin in his heart. In his heart, Xu Chang can't wait to kill Leng Xin. Therefore, no matter how strong the killing intent in Leng Xin's eyes is, for Xu Chang , had no effect at all, on the contrary, it also aroused the hidden killing intent in Xu Chang's heart.

"What's the matter, Leng Xin, do you still want to fight here? Or, you want to settle our old score with me? Hmm...!"

Xu Chang looked at Leng Xin with a sneer on his face. The clothes on his body would automatically move without wind. Leng Xin knew that this was Xu Chang's full use of his true qi. If the true qi circulated quickly in the warrior's body, it would cause such a result.Leng Xin used to be a martial artist at the acquired level, he has such experience.

"Hehe... Brother Xuchang, you misunderstood me. How could I want to fight? I am an ordinary person now. How can I have the guts to fight with warriors? Ordinary people and warriors are not in the same position. Brother Xuchang, I Let's go, let's go...!"

After saying these words, Leng Xin didn't wait for Xu Chang's answer, and walked backwards with a flattering expression on his face. He didn't dare to point his back at Xu Chang. Who knows if Xu Chang would take advantage of the moment he turned around to make a move? deal with yourself.

Of course, what Leng Xin said just now was also hidden in Jifeng. He said that warriors and ordinary people are not in the same position, and that he is now an ordinary person, in order to make Xu Chang feel unsure about how to attack him. Decide.

After all, for a quasi-martial artist to attack ordinary people, it feels a bit like bullying the weak.

It can be said that Leng Xin's calculations are still very accurate. After Xu Chang saw Leng Xin bowing his head to him, the idea of ​​doing something that had just arisen in his heart began to waver. Soon, the clothes on Xu Chang's body returned to calm.Xu Chang stopped.

Xu Chang stopped because he was indeed hit by Leng Xin's words just now, asking him, a quasi-warrior, to attack an ordinary person.It's really a bit difficult, as you can see here.Xu Chang is a bit pedantic, but also because now is not the best time for Xu Chang to make a move.

Leng Xin's defense just now was too tight. If Xu Chang made a forceful move, both he and Leng Xin would definitely end up hurting both sides. If before this, that is, before finding the fishing boat and the dog's head gold back home, Xu Chang really didn't care about himself Both Leng Xin and Leng Xin lost, but now Xu Chang has found a fishing boat to go home.With such a large piece of dog's head gold, Xu Chang really didn't want to lose both with Leng Xin.

You can say that Xu Chang is weak, you can say that he has no responsibility, but don't forget that Xu Chang is just an ordinary fisherman, and the first thing in his heart is the safety and prosperity of his family. I believe this is also in the hearts of many people. first thought.

I believe that if you were in the position of Xuchang now, you would have the same choice as Xuchang.

Anyway, if you want to trouble Leng Xin.Xu Chang will have many opportunities in the future. As Xu Chang's martial arts become stronger and stronger in the future, he wants to trouble Leng Xin, or the success rate of killing Leng Xin will increase.Therefore, Xu Chang did not make a move against Leng Xin in the end.

Rather than hurting Leng Xin and both, it is better to be patient now.Wait until I make great progress in martial arts in the future, and I will no longer be afraid of bullets.Go find Leng Xin again, at that time.What kind of fate Leng Xin will end up with is still up to himself!

What's more, if Xu Chang fights Leng Xin to the death now, his younger brother Xu Jie will also be in danger.

The piece of dog's head gold around Xu Chang is the size of a human head. The benefits represented by such a large piece of dog's head gold are really too great, so big that no one can resist the temptation of such benefits.Faced with such a huge lure of profit, people like Monkey will definitely do something unusual, and they will definitely fight against their seriously injured brother Xu Jie for this dog head gold.

Maybe Xiaojie can kill a few people by relying on martial arts, but the final result...

It was precisely because of these reasons that Xu Chang stopped now. For Xu Jie and his family, now is not the time for Xu Chang to act.

……………………………………………………………………………………………….
"Hey... I've been digging for so long, but the harvest is so little. Hey, I'm so tired. I won't dig anymore!"

The monkey threw away the branch in his hand. He had been digging the soil for three hours, and the harvest was only three pieces of gold ore the size of a thumbnail. Such a harvest made the monkey discouraged.

"Hey... I won't dig anymore. I'm really too tired. This is simply not human work..."

"I won't dig any more. I'm too tired. It's really not worth it to work so hard for a few thumb-sized gold ores. I won't dig anymore..."

Soon, everyone stopped. Just three hours ago, the monkeys did gain a little bit, but the gains were not great, or in other words, the gains were not as great as the monkeys imagined.

Among the monkeys, the one who gained the most was the one who dug out the fist-laughing dog's head gold before. After that, what Monkey and the others dug up was only the big finger-sized dog's head gold.

Such a small harvest made the monkeys lose the motivation to dig.

"Brother Xuchang is the best. Up to now, Brother Xuchang has dug up a full one, two, three..., seven, seven pieces of gold. I'm so envious!"

The monkey looked enviously at Xu Chang who was still digging. With the help of the zhenqi body and the hoe, Xu Chang's digging efficiency was much stronger than that of monkeys.During these three hours, the monkeys only dug a hole more than two meters wide and four to five meters deep, but the hole Xu Chang dug was fully four to five meters wide and more than ten meters deep.

No wonder Xu Chang's harvest is so much better than that of the monkeys. This is because Xu Chang's workload is several times stronger than that of the monkeys.

"Hey, it's great to have martial arts. Even digging is so much stronger. I really miss the days when martial arts were in my body!" The eyes beside the monkey replied with a sigh (called eyes, actually It is because this person has always been wearing eyes), and his eyes are full of envy towards Xu Chang.

"Hehe..., you envy me for my martial arts, so you can start learning martial arts after you go back. The gold you dug this time is definitely enough for you to learn martial arts again, so now you don't have to envy me, you will still be in the future A warrior."

Xu Chang flew up with a smile on his face.Xu Chang didn't dig anymore at this time, it's not that Xu Chang didn't want to dig.Rather, he had already dug to the bottom, there were some rocks underneath, and Xu Chang could no longer dig.

"Then I will borrow your good words from Brother Xuchang. Why, brother Xuchang is also tired and wants to come up to rest?" Monkey asked with a smile on his face.

"No, I'm not tired, but the bottom is full of rocks, and I can't dig any further. I want to choose another place to dig. Look, these are the rocks below. They are very hard. I'll take one up. As a souvenir.

This can be said to be the treasure of my life, so I have to take some souvenirs back as a souvenir.Dog head gold is good as a souvenir, but for ordinary people like us.It's still too extravagant, and it's more in line with our identity to use ordinary stones as souvenirs. "

Xu Chang kept throwing a stone in his hand that was the size of two adult fists, and said with a satisfied smile.When he saw that the monkey wanted to see the stone in his hand, Xu Chang was also full of belly and handed the stone to the monkey.

At first, the monkey didn't pay much attention to it, he was just looking for some talking threads.However, wait until the monkey took the stone in Xu Chang's hand and took a look.Then, the monkey's face changed.He could not have imagined that this stone would be such a stone, that it would be a...

When he got here, the monkey hesitated, whether he should tell this matter, because if he concealed this matter, then he could definitely become a real rich man, but if he really concealed this matter, then For himself... the monkey was extremely contradictory.

"Monkey, eat some coconut. After digging for so long, you should be thirsty. Take it!" Xu Chang handed the monkey a coconut with a smile on his face. The kind smile on Xu Chang's face made the monkey's heart burst. In a trance, he took the coconut very numbly, and soon, the monkey tasted the delicacy of the coconut, and it was the delicacy of the coconut that made the monkey make up his mind.

Now that I have definitely become a good person, let's start here!Monkey made up his mind!

"Brother Xuchang, are all the rocks below like this?" Monkey now had a relaxed look on his face when he asked this question, but his tone was very colorful, obviously he attached great importance to this question.

"Well, yes, they are all stones like this. Is there something wrong with it?" The monkey's tone caught Xu Chang's attention. Could there be some secret in it?
"Huh...!" Monkey didn't answer Xu Chang's questioning right away. Instead, he breathed a sigh of relief first, and then asked solemnly, "Brother Xu Chang, you are a good man. What you did to you before, even almost killed you and your brother in the mouth of the sand tiger shark, but now you have an absolute advantage, you still choose to let us go, so, brother Xuchang, I am a monkey. Thank you for your generosity."

"Monkey, I..."

"Brother Xuchang, don't talk, just listen to me." The monkey directly interrupted Xu Chang, and then he went on to say: "Brother Xuchang, after you discovered the dog's head gold, you actually allowed us to wait for you to find the dog's head This kind of magnanimity really makes me feel ashamed, so I have to repay you, Brother Xuchang."

Speaking of this, the monkey paused for a while, and his right hand reluctantly picked up the stone just now, and then the monkey firmly put the stone into Xu Chang's hand, and continued: "Brother Xuchang, this piece Stones are gold ores. The university I studied in the past has related institutions for the study of minerals. When I visited there, I saw a lot of gold ores.

When I think that there are gold ore specimens in my university, I believe everyone can't help but want to see what the gold ore looks like. Therefore, I know what the gold ore looks like, and now, I can tell Brother Xuchang with certainty. You, the stone in your hand is gold ore, and it is the kind of gold ore with high gold content. "

After telling everything, the monkey seemed to have collapsed and sat on the ground directly. However, the monkey's mental state was surprisingly good, because this time the monkey chose to be a good person and to repay his benefactor.

If in the past.When the monkey was still in the black-shi-hui, the monkey knew that this stone was a gold ore.The monkey's first thought was to hide the news, and then figure out a solution by itself.However, now Houzi chooses to bring this matter up to Xu Chang, which shows that Houzi really wants to reform himself.

A person who really wants to reform, we have to accept him, and we have to stop discriminating against him!
Self-confidence means correcting mistakes and starting over.The idiom "rehabilitate oneself" was born from a story.

In the early Han Dynasty, there was a very famous medical scientist named Chunyu Yi.Because he was once the head of Taicang who was in charge of the state warehouse of Qi, people respectfully called him "Canggong".

Chunyu Yi was fond of medicine when he was young.He worshiped a doctor named Gongsun Guang as his teacher.He humbly asked for advice, and later, he studied medicine from Gongsun Guang's half-brother, Gongcheng Yangqing.

Gongcheng Yangqing asked Chunyu Yi to put aside all the medical prescriptions he had learned before, and then gave him all the secret recipes he was in charge of, and taught him ancient pulse books and various methods of diagnosis.

After Chunyu Yi studied for two years, he often cured people's diseases with medicine, so he soon became a famous doctor.But he likes to travel around, and some dignitaries sent people to invite him to be a doctor, but he was afraid that his actions would be restricted, so he refused them one by one.

to this end.He also hid his whereabouts, often moved his household registration, and even did not buy property.In this way, it is inevitable to offend the powerful.When he was the head of Taicang, someone denounced him.

167 BC.Chunyuyi was sentenced to corporal punishment (a kind of torture such as tattooing on the face, cutting off the nose or cutting off the feet), and according to regulations, he was sent to Chang'an, Kyoto, to be tortured.

Suffering corporal punishment is an extremely painful insult. Before leaving, Chunyu Yi's five daughters cried loudly. One can help me!"

The youngest daughter Tiying heard her father's words, both sad and dissatisfied.She believes that girls can save their father from suffering just like boys, so she still went to Beijing with her father.

After arriving in Chang'an, Tiying wrote to the imperial court and said: "When my father was the head of Taicang in Qi State, the people praised him for being honest and fair. Now he has broken the law and will be punished. I feel very sad. People are executed and cannot be born again. Even if you want to correct your mistakes and start a new life, there is no way out, and you can’t do what you want. I would rather put myself into the government as a slave to redeem my father’s sins, so that my father can have the opportunity to correct his mistakes and start a new life.”

Tiying's letter was sincere and touching. After reading her letter, Emperor Wen of the Han Dynasty was moved by her spirit of honoring her father and voluntarily punishing her father. Corporal punishment.

Tiying's extraordinary action not only saved Chunyu Yi from being sentenced to death, but also allowed him to return to his medical profession, devote himself to medical research, and become a famous doctor of his generation.

As the saying goes, gold is not exchanged for a prodigal son. Therefore, for those who want to turn over a new leaf and truly start a new life, we must accept them with the most magnanimous heart, give them opportunities, and help them truly return to society.

Xu Chang may have never believed in monkeys before, and he may still have deep guard against monkeys in his heart, but this time, after hearing these words from monkeys, the prejudice against monkeys in Xu Chang's heart was completely eliminated. The monkey disappeared, and Xu Chang fully felt the monkey's intention to turn over a new leaf.

If the monkey didn't want to really reform himself, how could he tell himself that this stone is gold ore.

You know, just now Xu Chang said that in the depths below, there are all such stones. Why did Xu Chang come up? It is also because the bottom is full of such stones. Xu Chang can't dig, so he has to come up.

Now the commemorative stone brought up by Xuchang is gold ore, which means that the stones below are all gold ore. Moreover, the monkey said just now that this gold ore is an absolute rich mine. At a depth of more than ten meters below, there is a rich gold mine.

Gold mine refers to gold ore or gold deposit (mountain).Gold ore is a mineral aggregate with sufficient gold content and can be used industrially; gold mine is a place where gold is obtained through mining operations; gold deposit is an accumulation of gold ore with a certain scale that can be used industrially through mineralization.

No other metal in the world can participate in human economic life like gold, and have such a significant impact on human society.Its dazzling luster and unparalleled physical and chemical properties have a magical and eternal charm.

Although the social status of gold is in the history of human civilization for thousands of years.Go through vicissitudes, ups and downs, honor and disgrace.Ups and downs fluctuate, but it still maintains a sacred aura among the many people.For the common pursuit of wealth.

The crust formed in the early stage of the earth's development has a high gold abundance, so it can generally represent the Archaean greenstone belt composed of the early residual crust, especially the combination of mafic and ultramafic volcanic rocks, which has a high gold abundance value All kinds of rocks in the earth's crust may become the earliest "mineral source layer" of gold deposits.

The types of gold deposits are complex and diverse.There are mainly conglomerate type, greenstone belt type, quartz vein type, ductile shear zone type, Carlin type, porphyry type, shallow low temperature hydrothermal type, volcanic rock type, Cenozoic placer, etc.

金在地球中，地核为2.6x10－6，地幔为0.005x10－6，地壳为0.004x10－6。金在地壳中的丰度只有铁的11千万。银的121。地球上99%以上的金进入地核。

To sum up, the abundance value of gold in the earth's crust is very low, and it has properties such as sulfophilicity, copperophilicity, siderophilicity and high melting point.

To form an industrial deposit, gold needs to be enriched by thousands of times. To form a large mine and a rich mine, gold must be enriched by thousands, tens of thousands of times, or even higher.It is generally believed that large-scale gold deposits generally have to go through a rather long geological period, and can only be formed through multiple sources, geological structural evolution, and multiple mineralization superpositions.

According to the structural state and gold content of gold in minerals, gold minerals in gold deposits can be divided into three categories: gold minerals, gold-bearing minerals and gold-bearing minerals.

The so-called independent mineral of gold.It refers to gold produced in the form of gold minerals and gold-bearing minerals. It is the most important form of gold in nature and the main object of industrial development and utilization.

So far, 98 kinds of gold minerals and gold-bearing minerals have been discovered in the world.But there are only 47 kinds of common ones, and only more than 10 kinds of minerals are directly used by industry.

Gold Minerals:
Natural element mineral natural gold (au), containing au>80%. ag<20%; silver-gold ore (au; ag), containing 80% to 50% au. ag20%~50%; gold and silver ore (au; ag), containing au50%~20%. ag50%～80%; natural gold containing platinum and palladium (au; pt; pd), containing % ~ 95.55%, pt0 ~ 11.5%, pd0 ~ 12.3%; silver copper gold ore (au, cu, ag), containing %, %, cu9.2%, pd4.2%, rh4.3%.

Pure natural gold is rare, which often contains a certain amount of ag, forming au-ag series minerals.There are still different views on the understanding of this series of minerals.According to a large number of test results in my country, the chemical composition of this series of minerals changes continuously.Subspecies can be divided into natural gold, silver gold ore, gold and silver ore and natural silver.

Natural gold can be divided into bright gold, microscopic gold, submicroscopic gold and sub-electron diffraction gold according to its particle size.

根据枫叶国采矿公司资料，岩金矿中85%的金粒度小于0.01mm，一半以上为1～5μm。砂金矿中绝大部分金的粒度变化范围为0.25～10mm，其中粒径1～4mm者最常见。

The purer natural gold has a thick golden yellow color and streaks, and its measured density is 18.9gcm3 (including au 99.55%, ag 0.45%).

As the ag content increases, the color and streaks gradually become lighter, and the density gradually decreases.The measured indentation hardness is vhn50g, and the natural gold is 39.5-103.3 kgmm2.With the increase of ag content, the vhn value initially increased (natural gold-silver-gold), and then decreased (silver-gold-natural silver).

Natural gold can be produced in almost various types of gold mines, and it is one of the main economic minerals of gold in most deposits, and can become the most important economic mineral of gold in some deposits.

Although gold and silver ore can be seen in some deposits, the content is generally very small, and only in a few deposits have industrial value or are the main economic minerals of gold and silver.Although natural silver is relatively common, it generally does not contain gold or contains a small amount of au (0.n%), and only a relatively large amount of gold (au0.n% ~ 10n%) is seen in individual deposits.

There are many symbiotic (associated) minerals of natural gold and other au-ag series minerals, which can form a variety of mineral symbiotic combinations, among which the most important paragenetic minerals are quartz and pyrite.

Alloy Minerals:

Intermetallic gold-like minerals refer to natural alloy minerals in which two or more metal elements dissolve and form each other in a natural molten state.There are:

(1) Weishan Mine (au.ag) 3hg2;

(2) Sifang Copper and Gold Mine cuau.

（3）金-银碲化物类矿物 有碲金矿aute2；碲金银矿ag3aute2；针碲金矿，又称针碲金银矿auagte4。

(4) Gold-silver-selenide mineral selenium gold-silver ore ag3ause2.

(5) Gold-silver-bismuth compound mineral black bismuth gold ore au2bi.

(6) Gold and silver antimonide minerals

(7) Gold and silver sulfide minerals sulfur gold silver ore (ag3au) 4s2.

Among the above-mentioned gold minerals, natural gold and its variants (silver-gold ore, gold-silver ore) are the most widely distributed.It is also the most important industrial mineral of gold.

从人类社会发展的全局来看，19世纪是一个十分重要的世纪。在19世纪之前数千年的历史中。人类总共生产的黄金不到1万吨，如18世纪的100年仅生产200吨黄金。

到19世纪黄金生产跃上了新台阶，100年期间生产的黄金达到了1.15万吨，是18世纪的57.5倍，其中1850—1900年间就生产了1万吨。

After entering the 20th century, generally speaking, the production of gold in the world has generally shown an upward trend, and there have been several times of large increases in production.

在1900年世界黄金产量每年300吨，在20世纪早期最高年份产量达到每年700吨、30年代最高产量年份达到每年1300吨、60年代最高产量年份产量接近1500吨。80年代世界黄金年产量突破2000吨，20世纪90年代至今产量总体还在增长。

Since the 20s, the world's gold production has been relatively stable. Since the 90st century, the world's gold production has stabilized at an average of about 21 tons.

Although the gold output of some countries has increased, such as Australia, Peru, and the Monkey Country, the gold output is increasing, but the gold output of South Africa, the United States and other major gold producing countries is in the middle. decline.

In addition, due to the long investment cycle and high mining costs of the gold mining industry.Judging from historical data, the amount of global mineral gold cannot grow rapidly, so it can be said.In the next few years, the world's gold production will not change much and remain relatively stable.

According to the inference of scientists, there are about 60 trillion tons of gold resources in the earth's crust, more than 1 tons per capita.but.So far, the world's proven gold resources are only 8.9 tons, and the reserve base is 7.7 tons.The reserves are 4.8 tons.

As of 2005, only 12.5 tons of gold have been mined by humans.Accounting for about 20/[-] of the total reserves, only [-] grams per capita.

The distribution of gold on the earth is very uneven.Although there are more than 80 countries producing gold in the world, the gold production varies greatly among countries, and the production is quite uneven. Among them, the top 2004 gold producing countries in the world in 10 are: South Africa, the United States, Australia - Greater - Leah - Asia, China, Bear Country, Peru - Lu, Canada - Canada - Great, Assonicia, U - Zi - Be - Ke - Sri Lanka - - Tan, Pakistan - cloth - Asia - new - a few - within - Asia.China's gold output has been ranked fourth in the world.

在2004年，南-——非、澳——大--利--亚--及米国产量分别占到世界总产金量的13.9%、10.6%、10.2%；而我国的产金量也达到8.6%。世界每年矿产黄金2600吨左右，但是能达到这个产量是经过了人类不断探索和努力的结果。

The basic pattern of world gold productivity distribution formed in the 19th century has continued to this day, and the major gold-producing countries formed in the 19th century are still the most important gold-producing countries in the world today.

Since 1980, South Africa's gold production has shown a steady downward trend, especially after the 90s, the rate of decline has accelerated slightly, but its gold production still ranks first in the world;
The gold production in the United States has been in a state of continuous growth, especially since the late 80s, it has leapt to the second place in the world; while the gold production in Australia-Great-League has been from the late 80s to the early 90s , gold production tends to be stable with little change.

The main gold-producing countries in the world are: South Africa, the United States, Australia-Great-League-Asia, Bear Country, Canada-Canada, China, etc. However, the world's gold production pattern has also changed over the past century. Changes, especially while the gold production in the United States and Africa is declining, the gold production in Peru, Argentina, Argentina, and East-South-Asia in South America is increasing significantly. Among them, La- Ding-America-America's gold production has accounted for 14% of the world's total.

It can be said that with the development of society, gold mining is becoming more and more prosperous! (To be continued..)
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