Of course, I also embarked on a journey to find one of the main purposes of this time———— bronze.

Bronze is the earliest alloy in the history of metal smelting and casting, and the alloy of tin or lead added to pure copper (red copper) has special importance and historical significance, compared with pure copper (red copper), bronze has high strength and low melting point (25% tin smelting bronze, the melting point will be reduced to 800 °C). The melting point of pure copper (copper) is 1083°C). Bronze has good castability, wear resistance and chemical stability.

Pure copper (red copper) can actually be refined, but the melting point is particularly high, and it is not very easy to use~~

In general, it is very soft, not easy to make, you can add tin or lead ~~

But as for what to add, Chen Chao said that it doesn't matter, it depends on what resources are on the map given by Xiaodian~~

However, it is best to add tin, which is soft and malleable, chemically stable, corrosion-resistant, fusible, small friction coefficient, and non-toxic tin salt.

Chen Chao queried (crossed out) and thought about the addition ratio, which is divided into six types.

1. Zhong and Ding: The ratio of copper and tin is six to one, that is, copper accounts for 85.71% and tin accounts for 14.29%.

2. Axe: The ratio of copper and tin is five to one, that is, copper accounts for 83.33% and tin accounts for 16.67%.

3. Halberd: The ratio of copper and tin is four to one, that is, copper accounts for 80% and tin accounts for 20%.

4. Big blade: the ratio of copper and tin is three to one, that is, copper accounts for 75% and tin accounts for 25%.

5. Cutting arrows: The ratio of copper and tin is five to two, that is, copper accounts for 71.43% and tin accounts for 28.57%.

6. The ratio of fire, copper and tin is one to one, that is, 50% each.

(Note: Tin is the toughest in bronze at 17 to 20 percent.) ）

And tin and copper are often associated, of course, lead also has a certain probability of being associated with them, and silver is often accompanied.

But this kind of thing is lead, if you don't add it, you can't add it, and it's not good for the human body in this state of no protection.

So in addition to pure copper (copper), Chen Chao also needs to find tin~~

Because after a glance just now, he didn't get sixty to start the game - that is, copper-tin associated ore.

Not only is it not a sixty start, but the two distances are still far away, the straight-line distance is about two hundred kilometers, and it is estimated that the score will have to drop again.

Chen Chao inquired (crossed out) and looked at the search characteristics of tin ore.

The main characteristics are: 1. Granite area or hidden granite area.

2. Marble, hornstone, skarn, dolomite, and electroquatite areas.

3. Ultramafic rocks and gabbro in rhyolite, granite, granitic porphyry and near their contact zones, in individual tin-rich areas;

......

In general, these characteristics ......

He didn't know a lot......

But fortunately, there was a positioning map given by Xiaodian's classmates, so he decided to take people to the mountains after arriving at the place, and there was a specific positioning, and it should be much more convenient to find it.

Moreover, the characteristics of cassiterite are still relatively obvious, and the natural cassiterite color is gray and black, shiny, and very easy to distinguish.

And the most important pure copper (copper) can be found through malachite.

Because copper deposits are located on the surface of the earth, there are often some purple-red natural copper (also known as red copper) with a purple-red purity of more than 99%. It is soft and malleable, and can be processed into tools and household items with a little beating.

In the oxide zone in the upper part of the copper mine, a kind of malachite is also commonly found in the green color.

Malachite is named because it is colored like a peacock's feathers, and in general, it is very good-looking and easy to identify.

It is mostly lumpy, stalactite-like, crust-like and concentric band-like. The green pigment made of malachite is called stone green, also known as stone lu. Malachite is also known as "patina", and it is also a sign of prospecting.

When Chen Chao checked the information (crossed out) and thought about it, he also found an option to open the game completely, that is, a place called Tonglu Mountain.

It's a remarkable place, a complex of copper, iron, gold, silver, and cobalt.

Of course, he didn't have to think about it now, because this place was far away from him.

I can only mark it first, and then put this cute little obedient into the arms of the big guy in this system~~

Copper ore mined from copper ore is beneficiated into copper concentrate or copper ore with higher copper grades.

Copper concentrate needs to go through smelting commission before it can become refined copper and copper products. The earliest source of copper ore is malachite.

Therefore, as long as you find any mountain with malachite, it is estimated that the copper mine below is what Chen Chao wants.

Thinking of this, Chen Chao sighed softly.

In this world, you must first be a survival expert, and then botany, biology, geology, etc.

It is estimated that there will be a war ahead, and it will have to be a military strategist...

It can't be the kind of talk that doesn't practice on paper......

Even law, psychology, sociology, linguistics, literature, mathematics, etc., are not counted......

Even in business, Lao Tzu has to find a way to figure it out...

, I'm Chen Chao, I'm just a rookie with a little bit of money...

In order to cross the front to recite 300 Tang poems, I read Marxism and Grandpa Mao's anthology!!

I think that my teammates don't hang up, and I have 300 bowls of dry rice!!

What I want is a fragrant car for me to choose, a beautiful woman hugs me full of arms, steps on the moon to the heavenly palace, and the fairy lets me have mercy!!

I'm not here to look for minerals!!

What the? You say this mine belongs to me?

Find, look for it now, Lao Tzu can find it every day!!

I look for it every year, every month, when I wake up, when I sleep!!

Finding the old world is all trivial~~

Lao Tzu can not only find, but also dig, no, the people who are followed by the little one hundred to listen to my dispatch!! ～～

Oh, and pigs and sheep, who can also move a little bit of something.

It's not much, but it can be moved, isn't it? ～～

They can also be on when necessary!!

Look at the big guy in this system with the most primitive tools to develop the best animal power handling tools! (bragging)

Move as much as you want!

When Chen Chao led the army for a few days, stepping on several rivers, crossing several jungles, and climbing over several mountain peaks.

He could already perceive in his consciousness that he had walked near the location of the pure copper (copper) mine specified on the map.

He looked up and saw that his vision was poor.

Surrounded by mountains, you can only see bare branches, half of the chicken blood, and a few white clouds floating in the blue sky.

So Chen Chao asked everyone to wait at the bottom of the mountain, and he took Qu and Li Nong first, and found a suitable mountain to climb up first.

When he stood on the highest mountain and looked into the distance, Chen Chao was shocked by the mountains in front of him.

It can't be said that they all look exactly the same, there is still a little difference between tall, short, fat and thin.

But everything on the mountain looks pretty much the same, huh?

At this moment, he wanted to interview these mountains.