This is a simple app that will allow you to identify some of the most important minerals on the planet. It is a useful app that will help you learn about the different types of minerals and their properties. This app is also a great way to discover the different types of rocks you can find in the world.

What is a rock?

A rock is a solid collection of minerals. They can be classified into three groups: minerals, metals, and non-metals. The most important thing about a rock is that all its elements are in constant interaction with each other. This is why it is important to study the different properties of each element, as well as their interactions.

What is a metal?

A metal is a chemical element that has been fused with other elements to form a solid.