What's the difference between placer gold and Sikkim?

According to the query of Baidu Love Procurement, placer gold and Sikkim have the following differences:

1. color: the color of placer gold is red and yellow, and there are also light yellow and cyan yellow. The color of tin gold is silvery white, and it can also turn white after adding copper and nickel.

2. Composition: The main component of placer gold is gold, with a content of about 50%. Sikkim is an alloy, the main component is tin, and the content is above 95%.

3. Origin: placer gold is produced at the bottom of the river or in low-lying areas, mixed with rocks and sand, and gold is washed out. Sikkim mainly comes from mines in mountainous areas.

4. Purity: the purity of placer gold is over 90%, and the purity of tin gold is over 95%.