Sand with many colors, where do these colors come from?

Sand comes from millions of years of weathering and crushing of rocks, and the earth's crust is rich in a wide variety of rocks and colors, and after hundreds of years of weathering, it finally forms sand of various colors.

Sand is mainly produced by the weathering of rocks, and the minerals in the rocks are colored, so the sand is also colorful. For example, iron is red, and sand containing magnets is red.

This is the natural formation of the color of the substance, and the sand contains many different elements that give it its color.

As a mild earth color, sand is a very attractive color. The runway show was intellectually gentle, and the street photography was fashionable and stable. As shown below:

The warm and soft sand color is born with a sense of luxury in the earth color, and the mild texture is a little more delicate, which is very suitable for the warm and cold season. Soft and noble, with the smell of sunshine, whether it is life dress or home decoration, it can give a gentle impression and successfully attract people's attention.

There are many types of sand, including river sand, sea sand, metal sand, and natural sandstone pulverized sand, and the sand contains a small amount of soil, and the soil content is limited by the grade of the building.

Sand is one of the main constituent materials of concrete and mortar, and is a bulk material for civil engineering.

Sand is divided into two categories: natural sand and artificial sand. Rock particles formed by natural conditions (mainly rock weathering) with a particle size of less than 5mm are called natural sand. Artificial sand is made from crushed rock, due to the high cost, flakes and powders.

According to its different origins, natural sand can be divided into river sand, sea sand and mountain sand. The surface of mountain sand is rough, the particles are angular and angular, the sand content is high, the content of organic impurities is also more, and the quality is poor. The surface of sea sand and river sand is smooth, but the salt content of sea sand is high, which has a certain impact on concrete and mortar, and river sand is relatively clean and widely used.

There is yellow sand. Black sand. White sands. There is also red sand. There are many colors of sand, but the most common is yellow sand. When you have time, go and experience it yourself.

The black sand beach is located on the island around Macao, China, and is a famous natural bathing beach, which is half-moon shaped, with a gentle slope and a wide sandy beach. The sand here is dark and soft and slippery, hence the name Black Sand Beach Park, which is a good place for people to travel and recuperate. In the middle of it, it is as if you have entered a black world.

Located in Australia, Red Beach is a dazzling and beautiful red beach. Whenever the sunset is sprinkled on the beach, it brings a dreamlike feeling to visitors. The secret lies in the fact that the sand near the beach is coated with a layer of iron oxide, which is formed by the erosion of wind, sunlight and sea water over a long period of time.

The blue sand beach is located on Turuk Island in the South Pacific Ocean, the bay is horseshoe-shaped, and the sand is all crystal clear blue particles, like countless small blue gems sparkling, brilliant, beautiful, and a rare natural wonder.

Located on the west coast of the Cape Verde Islands in Africa, the white sand here is as white as jade and shining. Baisha Yuan is a peculiar ore, which is decomposed and weathered by seawater and turned into fine sand, which looks like a vast white snow from a distance.

Most of the white sand beaches are composed of quartz sand, which can contain sandy potassium feldspar, plagioclase, siliceous cuttings, zircon, monazite, garnet, tourmaline, anatase, muscovite, etc. ）

The beaches of Nassau, the capital of the Bahamas, are pink and are said to be made of red coral washed into powder by the sea. The color of the sand is not certain. It's created by nature, and it's all wonderful, just like hair you don't know how much there is.

You should know now, right?

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The formation process of sand in <> desert is similar to that of sand in rivers, both of which are formed after weathering of rocks, etc., and then accumulate together to form deserts, beaches, and river beaches under the action of water and wind. Moreover, the sand is all fine stone grains, and the main component is generally the crystals of silica, which is what we usually call quartz crystals.

Therefore, its composition is different from the parent material of the location, the sand in the desert, because there is no erosion of flowing water, can retain a certain degree of nutrients for plant growth, while river sand is just the opposite. Therefore, the sand of the desert can be used to grow flowers, and the sand of the river can be used for construction.

Although desert sand and river sand are both formed by the weathering of surface rocks, they are qualitatively different.

Desert sand contains a lot of impurities, due to the perennial dry, wind and sun, the salt content is high and alkaline, and cannot be used as a building material.

Although the river sand is weathered by rocks, it is pure after being washed by the river, contains less soil, and is neutral, making it a good building material.

Probably due to the early weathering, most of them are relatively flat. I am related to geology, I still don't know much about geophysical prospecting, and the first profile in geophysical prospecting seems to reflect the thickness of different geological bodies, but the desert is loosely stacked, and I don't know if it's okay.

The project itself can mobilize the PLA, mobilize the masses and volunteers, and can take the form of state funding, social crowdfunding (refer to Ant Forest), and social donations.

The walls can be sandwiched with reinforced concrete on the outer layer and bricks on the middle with hardened sand.

This is like a human blood vessel, when the blood vessel is opened, the ability to flow blood is created.

Since then, there is a desert route landmark, and you don't have to worry about getting lost in the desert anymore.

Even taking into account that sand is not necessarily fine-grained, at this order of magnitude distance, there is still more sand than stars. Troublesome adoption, thank you! The main ingredient of sand is silica, and the density of silica is that sand is smaller than this density because of open space.

The total area of the Sahara Desert is about 9,065,000 square kilometers, and it seems that there is no such thing as sand being mined in general. The biggest use of sand is to make glass to refine silica, of course, it is relatively pure sand, the sand of desertified soil is often not a simple silicate, I am afraid that it is enough to make glass, and it should not be a big problem to burn a ceramic?

The main component of sand is silica, which also contains other different chemical elements. When silica forms complexes with other elements, it shows a non-stop color. There is also the light of the sun, which changes the chemical composition and the color.

Because there are various mineral elements in the sand, the color of these minerals is also different, and when these minerals are gradually oxidized in the air, they will produce a variety of colors.

The sand in the desert is mainly formed by the weathering of the rocks, which contain minerals of various colors, resulting in many different colors of the desert.

Red, orange, yellow, green, blue, purple, the sand in the desert is so rich in color, in fact, it has a lot to do with the minerals in the sand. In fact, the sand looks the same, but it contains a lot of different minerals, and the minerals contained in the sand are different in different regions, so the color of the sand may vary greatly in different deserts or in different areas of the same desert. In fact, this phenomenon can also be seen in seawater, and sometimes the two sides of the same sea are indeed two completely different colors.

The reason for the different colors of desert sand is that there are many natural minerals in nature, which itself has a lot of pure natural colors, such as iron minerals themselves will show red, and the sand in the desert will form iron oxides after a long time of sun exposure and elegance, and natural sand will appear red. In addition, gypsum minerals are also present in some grains, and after oxidation and blooming, it will appear white again. Black minerals and blue minerals are present, so there is not only one color of sand in the desert.

Although the sand of the desert is very delicate, in fact, the sand itself is the product of the weathering of small particles of stones, so there are still some small particles in the sand, since it is a stone particle, then there will naturally be a lot of minerals in the sand, such as silica. Moreover, different stones contain different minerals, and after hundreds of years or thousands of years, these minerals are buried in the sand.

The sand will continue to be oxidized and bloom after being exposed to ultraviolet rays in the desert area for a long time, so the sand in the desert will show the color of mineral oxides, which is the same as the different colors in some mountains, and many mountains in Zhushan are blue-green, which has a lot to do with the turquoise contained in it, so the color change of the sand in the desert is mainly because of the different minerals.

Because the light itself is composed of seven colors: red, orange, yellow, green, blue, and violet. In the desert, after dispersion, such a rich color is formed.

Because sand contains different minerals and the amount of minerals it contains, sand takes on different colors.

This has a lot to do with the minerals in the sand. In fact, sand looks the same, but it contains a lot of different minerals, and the minerals contained in the sand vary from region to region.

The color of the sand is not certain. It's created by nature, and it's all wonderful, just like hair you don't know how much there is. I just didn't find it.

Sand is a very small stone, and the stone is the color of whatever it is.

There are generally more than 10 kinds of heavy minerals in sand, and more than 40 kinds of minerals. In the desert of China, heavy minerals are mainly horn gate stone, epidote, metal minerals, garnet, etc. The color of different minerals gives the sand a special color.

For example, the names of minerals such as green mold spite, garnet, kyanite, rutile, biotite, muscovite, etc., can make us imagine their colors. In the Taklamakan Desert, the content of mica accounts for almost one-fifth of the total amount of heavy minerals, so the Taklamakan is known as the "glittering cracked vertical desert".

The desert is not exactly yellow, it also comes in a variety of colors. Different deserts have different colors, for example, between the sand dunes on the south shore of Lake Wenpi, the rough black sand seems to pave a wide highway in the desert; The sand dunes on the shore of Ulungu Lake are like salt accumulations, and the white flowers are dazzling; The sand dunes close to the General Gobi are gray and brown, revealing the earth-colored ...... of red soilTogether with a variety of plants that grow and bloom in different regions and in different seasons, the desert is clothed in a colorful coat.