Lead and tin, like copper, are relatively simple monomeric metal substances in nature, unlike iron, gold, etc., most of them exist in the form of compounds, which are difficult to purify. Pen, fun, and www.biquge.info

As long as you have the heart, it is still easy to find some single lead ore and tin ore in nature, but for a long time, people did not pay attention to this special stone, but only focused on those brightly colored gemstones, jade or dark blue copper blocks.

Lead ore and tin ore are relatively gray in color, and it is difficult to distinguish them from ordinary stones, so primitive people often did not know the existence of this metal.

Sometimes...... Even if the metal is nearby, you don't necessarily know it.

However, fortunately, Lin Yuan is here.

As far as he knows, tin and copper often belong to some kind of associated mineral, but this is a meteorite, so it is not certain whether there is tin on it, but even if there is no tin, it doesn't matter, lead is actually widely found in various ores.

The location of the Pangeng tribe is in the depths of the Dashan rift, surrounded by geological fault zones, it is said that the mineral reserves should be very rich, and what is needed now is just to remind everyone to find these ores from their side......

First of all, you need to look for all kinds of stones.

Lin Yuan had already ordered all the old and young clansmen to look around the tribe for stones of gray and black color or unusual weight, and he himself, with a few people, came to a pile of rubbles on the south side of Dazhai.

For many years, the Pangeng people have been mining the stones on this boulder to polish various stone tools, and over time, this fast boulder has gradually been dismembered and turned into a pile of scattered stones.

As far as the eye could see, almost all of them were yellow-brown granite, and there were no special stones, but Lin Yuan didn't have the heart to give up, he led everyone to look carefully one by one.

"Great Chief...... Are we going to inspect all the rocks here? ”

A female warrior asked with some hesitation.

Lin Yuan looked at the other party and said:

"Are you sure that the stone tools that the entire tribe needs are polished here? Including the rocks you've collected from all over the surrounding area? ”

“…… Yes, the tools here are relatively complete, and after we find suitable stones in the field, they are used here after grinding and molding......"

"Then find me all the stones!"

Lin Yuan ordered in a deep voice.

Immediately the people scattered and searched in all directions.

Grayish-black in color and noticeably heavier than other stones, this stone often contains lead and is the best feature to look for......

Lin Yuan also bent down and searched carefully in this pile of rubble.

Minutes and seconds passed, and soon, the sun had risen overhead, the air became hot, and everyone began to sweat profusely.

"Big Chief!!" A crisp male voice came from the camp behind Lin Yuan, and Lin Yuan turned his head to see that it was a young boy, and said with some twist:

“…… Big...... Grand Chieftain ...... Uncle said that it was time for dinner, and I would like to ask if you would like to go back to ...... dinner? ”

Lin Yuan wiped the beads of sweat from his head, this Pangeng tribe still maintained the matriarchal clan tradition of female superiority and male inferiority, and their men were mainly engaged in simple internal work such as cooking and sewing.

A female warrior seemed to be in a bad mood, and she frowned and shouted at the little boy:

"Don't talk nonsense here! If the big boss wants to eat, he will naturally go back and eat! Don't bother us! ”

When the little boy heard the roar of the female warrior, he couldn't help but shrink his neck and retreat timidly.

"Wait!" Lin Yuan said suddenly, "Forget it, the sun is so big, everyone has worked hard all morning, go back and find it in the afternoon for lunch, there are so many stones here, it will not be easy to find it for a while and a half......"

Lin Yuan was actually a little annoyed, originally he thought that it would be very easy for so many people to find a piece of ore, but it seemed that the actual situation was far more difficult, not to mention how troublesome it was to pick ore from a large pile of stones that looked the same, just to say that the probability of ore appearing here alone did not seem to be as high as Lin Yuan initially thought......

"Gone, gone! Go take a break! ”

Lin Yuan waved his hand, drove everyone off the stone field, and walked towards the village.

In the middle of Pangeng Village, there is a wide square, on which a large number of bonfires have been lit, on which half a wild boar is roasted, and bursts of strong barbecue aroma is permeating everywhere......

On one side of the barbecue grill, there are also two huge clay pots, in which a few pieces of wild boar are boiled in boiling hot water, and the bottom of the clay pot is supported by dozens of regular stones, and the clay pot is stacked with blazing firewood......

Several male Pangeng people are carefully sprinkling salt into the clay pot, which Jiu Yao brought back from the Western Regions, and since eating the salt, the daily stewed broth has become the favorite food of the Pangeng warriors.

There was already a group of female warriors waiting for food sitting around the stew pot, and when they saw Lin Yuan coming, everyone got out of the way, Lin Yuan walked over gently, seemed to sigh, and stood next to the stew pot.

Suddenly, the corner of his eye lit up!

After rummaging through the stones all morning, he unconsciously had a habitual sensitivity to the stones, and he suddenly felt that the stones under the stew pot were a little abnormal.

He immediately crouched down and took a closer look.

It turned out that dozens of stones, large and small, were piled up under this clay pot to form the shape of a stove, separating the clay pot from the burning firewood below, and the clay pot would not be directly pressed on the firewood.

What made Lin Yuan curious was not the clay pot, but the stones underneath the clay pot.

As far as the eye can see, most of the stones have been burned black by the firewood for many years, but there is one of them, which seems to be different in color from the others, and although it has a smoky gray appearance, it is not pitch black, but has a grayish and shiny color.

Lin Yuan's heart tightened, and he immediately found a branch from the ground next to him, squatted down, and lightly picked at the stone a few times.

The surrounding Pangeng people also stood up one after another when they saw their big leader suddenly like this, a little at a loss, not knowing what Lin Yuan wanted to do.

The branch in Lin Yuan's hand picked at this stone and ...... Double-click......

Soon, the soot on the outside of the stone was removed, revealing the dark gray color of the inside......

By the hot sun, the dark gray stone actually ...... It's actually a bit of a dazzling reflection......

Metal!!!

"Haha!!" Lin Yuan suddenly laughed happily, startling the people around him.

"It's really hard to get through the iron shoes! Someone! Come on!! ”

Lin Yuan beckoned, "Someone!" Put out the fire, move the broth pot to another fire, quick! ”

Everyone hurriedly complied, and their mood suddenly became excited, although they didn't know why, but seeing their big leader so happy, he must have found what he was looking for.

After everyone finished pounding the things, Lin Yuan found a clay pot of water and poured it on the pile of stove stones, and when the temperature of the stones dropped to an acceptable level, he couldn't wait to pick up the stones.

Start warm!

If you look closely, you can see that it is an irregular cuboid with chiseled marks on the corners, indicating that the stone was hewn from a large stone.

He rubbed the surface of the stone repeatedly with a few fresh leaves, and after a few strokes, the smoky marks on the stone's exterior gradually faded, revealing its original appearance.

It was a dark gray stone with a slight metallic glow on the surface, which was even more pronounced when looking at the sunlight.

This is a piece of ore with a high metal content!

There was no doubt that Lin Yuan had found what he needed to find!

Lin Yuan closed his eyes and thought about it carefully, judging from the color, the metal seeping out of this ore was dark gray, so that was to say, it was not silver, and the feeling of being in his hand was not much heavier than an ordinary stone, so it was unlikely to be lead......

He looked at the stove pile just now, and it was burning ordinary firewood, so the burning temperature would not exceed 300 degrees, then, that is, this metal could not be iron, and the melting point of iron was not so low......

As for other aluminum, manganese, cobalt, etc., it is even more impossible, although Lin Yuan's high school chemistry is not good, he also knows that those metals are all metals with poor stability, and they all need to be separated and purified by chemical means......

Well, the rest ...... There's only tin......

Tin ore has very high natural reserves in nature, and because the melting point is very low, it can be melted in less than 100 degrees, so it is very easy to melt...... This ore must have been treated as an ordinary stone, and under the long-term baking of firewood, the tin, which has a very low melting point, melted out of the tin ore and penetrated the surface of the stone, showing a sparkling metallic glow.

This kind of ore must have appeared in the field of human vision very early, but because it itself is not as dazzling as brass gemstones, and its appearance is not good, so it has not been taken seriously, but at this moment, this thing is in Lin Yuan's hands, but it is extraordinary, because Lin Yuan knows how to use it......

"Someone's coming!" Lin Yuan suddenly raised his head and shouted.

Several female warriors gathered around Lin Yuan.

"This ...... Stone stove, who is responsible for the construction? Lin Yuan asked.

After a while, a trembling old man walked out from behind the crowd, he bowed deeply to Lin Yuan, and said:

"Big Boss...... It's old...... I'm a cook......"

Lin Yuan nodded, motioned for the other party to get up, and then asked:

"What I'm going to ask you about now is very important for the survival of our entire tribe, and you must answer it seriously, understand?"

The old man nodded vigorously.

"Good!" Lin Yuan nodded, "I want you to recall, where did this stone come from!" Reminisce carefully......"

The old man looked carefully at the stove that Lin Yuan was pointing to, frowned and fell into contemplation, and after a long time, he said with some hesitation:

"Hmm...... Back to the big boss, this stove has been around for a long time...... It's been almost a year...... A year ago...... The patriarch asked us to cook soup in clay pots like the people of the northern plains, and we tried many times before we realized that the best way to cook soup was to build a clay pot with stones......

"We started with a stove and it worked well...... It's the ...... over there" The old man pointed to another clay pot, then he thought about it, looked at the clay pot here, and said, "Hmm...... At first, I was going to go to the stone tool yard in the south to find stones, but they were all stone chips used to make axes or stone spears, and they were not in good shape, so I found someone to dig on Mount Kinabalu in the east......"

A female warrior suddenly stood up and shouted at the old man in a furious voice:

"You're going to dig up Mount Kinabalu??? Don't you know that none of us stone spears dare touch it? ”

The old man was frightened, took a step back, and said busily:

"Sorry...... Sorry, because the stove requires a thick and stable square stone, where the stone is thicker, so it is more suitable for ...... I don't want to, it's just ...... This is the closest ...... to us."

"You blasphemer!!" After the female warrior finished speaking, she raised the leather whip in her hand and prepared to whip it at the old man.

"Wait!" Lin Yuan roared angrily, and the female warrior was suddenly stunned.

"I'm here! Who dares to be presumptuous!?? ”

The surrounding people were instantly silenced...... The female warrior quietly retreated into the crowd as well.

Lin Yuan walked over slowly, picked up the old man, and said earnestly:

"From now on, you don't have to be a man, I appoint you as the pioneer of the mountain, and you will take us to find ...... Such stones! ”

Lin Yuan said as he lit up the piece of tin ore in his hand.

The ore, which shimmered with a sparkling metallic glow, shone brightly in the scorching sun...... (To be continued.) )