Vermiculite, in mineralogy, is a type of mineral and is used for various purposes due to its characteristics.

Sudoite is a green mineral that is mainly found in Japan.

This rock contains chlorite.

This beautiful serpentine necklace is a gift from my mother.

This beautiful prehnite is part of my mineral collection.

This stone building is an ancient ruin.

In this mine, work is being done to separate the gangue from the ore.

The special theory of relativity is a theory proposed by Einstein.

Learning about the ancient special kana usage is very important for understanding ancient Japanese.

The Jōdai Tokushu Kanazukai is one of the notation methods of ancient Japan.