From ancient times, we humans have been relying on minerals to make tools of many kinds. Even now, we still use many minerals to fulfill our daily needs. In this chapter, we will dig into this topic and learn what kinds of minerals affect our daily lives.

• Minerals used for medicine

It might be shocking, but in ancient China, doctors blended herbal medicine with minerals to help patients get better.

Ancient Japan also had this custom and used lapis as laxative, cinnabar as pain killers, and amethyst as medicine for intoxication.

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