Is there gold in ordinary yellow sand?

Ordinary yellow sand also contains gold, but the content is very small, and the extraction cost is very high, so it is not worth extracting.

This is the gold rush:

Gold panning means that after the gold digger salvages the silt in a river or lake, he washes the silt in elutriation to find out the natural sand particles in the silt. Gold panning used to be a means of getting rich in the eyes of many adventurers, and there have been several gold panning waves in history.

Origin:

At the beginning of the 19th century, the United States launched the westward movement to expand to the west, and groups of adventurers pushed to the west coast of the Pacific Ocean. After the news of the discovery of gold mines in California was confirmed, it triggered another wave of immigration. People leave their jobs at hand and flock to San Francisco, trying to realize their dream of gold rush.

/kloc-At the beginning of the 9th century, the United States began an unstoppable westward movement, pushing the American frontier from the Mississippi River to the west coast of the Pacific Ocean. 1848, people who went to California discovered a gold mine here, which immediately caused a sensation in the world and quickly formed an unprecedented gold rush, which greatly stimulated the westward movement and the development of the western United States. The gold rush is an important part of the westward movement, just like a bright fragment on a magnificent picture.