Aragonite is a type of calcium carbonate, and its crystal structure is distinctive.

Aragonite is a type of calcium carbonate, and its crystal structure is distinctive.

This beautiful garnet is part of my mineral collection.

This rock contains cassiterite.

There are a lot of pebbles at the bottom of this river.

Nepheline is a very important mineral in mineralogy.

This Ishiganto was installed to pray for traffic safety.

This beautiful apophyllite is part of my treasure collection.

I found a stone centipede in the garden.

This beautiful zoisite is part of my collection.