What happens if you add sand to a glass of water and stir?

Ordinary sand, the one that is found in nature, on the street consists of a huge variety of grains of sand. And there are very small particles in it called sand dust. Even if the sand is in the place on the shore where it is well washed by the water of the river, ocean, sea, it still gives the same sand dust. Most likely, these are particles of very viscous clay. It is clay that can give such turbidity when in contact with water. Since the sand is very fine, and the clay dust is even finer, it is very difficult to “drive” it out of the sand. So it turns out that, no matter how much sand is in contact with water, clay mud will always stand out from it. And, if you pour dry sand into a glass of water, and stir, the water will turn yellow, cloudy from the very clay dust. After a certain time, the dust will settle and the water will become transparent again.