Basalt is different from ordinary foundation rocks in that it has a hard texture and is of good grade.

Before the advent of iron, it could be temporarily used for mining.

But it's not very efficient.

Bring another box of matches.

Military kettle.

After thinking about it, Tang Zheng also carried the Xuanwu knife he sharpened today, just in case.

After walking hundreds of meters, he came to his true birth point.

Still a forest area, but with mountains to the west.

After identifying it a few times, Tang Zheng groped to the small cave where he used to live.

It was dark in the cave, a match was struck, and the stick prepared on the road was lit.

The glowing flames lit up the scene in front of him.

Entering the eye, it is a rugged rock with some very sharp edges and corners.

Tang Zheng carefully bowed forward to avoid being cut by sharp edges and corners.

In the wild, being injured is a serious thing.

First of all, some beasts have a very sensitive sense of smell, and they can smell blood from tens of meters or even a hundred meters away.

Secondly, the pure natural healing of the wound will slow down a lot. Some small abrasions are fine. Once the wound is larger, it may be difficult to stop the bleeding.

After all, there are no medical first aid kits in the wild.

Judging from the knowledge learned from the Book of Everything.

There are three main types of rocks on earth: igneous, sedimentary, and metamorphic.

In fact, it looks very esoteric, but in fact, people can hear the main components of these rocks everywhere.

For example, granite is one of the igneous rocks, and so is basalt.

This type of rock is the most primitive rock on the earth, and it is also the originator of rocks. Their bodies are actually magma.

When magma erupts from the core of the earth, the high temperature meets the low temperature, and the liquid rock solidifies into stone.

Sedimentary rocks are better understood. The layers of peaks and the layers of stones on the walls that look like piles of fat are sedimentary rocks.

These rocks are all layered, the first deposition is in the lower part, the age is older, and the higher the layer, the newer the age.

Metamorphic rocks, as the name suggests, are rocks that are mixed with other substances in the continuous change of time, which are metamorphic rocks.

The most famous metamorphic rock is marble, also known as marble.

Today's mining, Tang Zheng's main target is the rock, granite that can be seen everywhere in the mine.

Granite is too common. Many small stones kicked off by the side of the road are mostly granite, but they are mixed with other impurities, which are not pure.

As for the rock mine in front of Tang Zheng, because it is located in the primitive world, all the materials here have not been exploited.

It is almost acquired by nature through hundreds of millions of years of evolution, and the purity of this granite is naturally not to be said.

After some investigation, it was found that the area of ​​the cave is too small, and it is difficult to have room for display.

Just when Tang Zheng was about to give up and wanted to find out if there was another cave.

The stone kicked under his feet suddenly hit the wall.

There was a hollow sound.

"Ok?"

Tang Zheng was slightly startled.

This sound indicates that it is hollow inside!

He held the torch to the source of the sound, and tapped the wall lightly with the Xuanwu pickaxe in his hand.

The rubble splashed, and the rock quality here was so loose that it felt like it could be easily chiseled.

Humph.

Just relax, it doesn't matter!

The first time mining is a little nervous, how can you pretend to be mining often?

Just spit and increase the friction of your palms so you don't have to throw the picks out.

Although there is a Xuanwu pick in hand, the collision between the stone and the stone is like two boys 'fighting bayonets', head-to-head.

Tang Zheng placed the torch on the side of the rock groove, held the pickaxe with both hands, and struck sideways.

"Nail!!" A crisp impact sound came out, and a small hole appeared where Tang Zheng had chiseled.

Chapter 18: Synthetic Pottery Enters the Neolithic Age

"Nail!" Another pick slammed into the hard rock.

Granite blocks rustled and fell.

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