These apps have a database for you to reference different types of rocks for identification ... Here's how to identify rocks with your phone. There are a number of apps that you can use if ...

There are lots of types of rock and each type has different properties and uses. For example, some are strong and hard but others are soft and sandy. Some rocks are harder than others. For example ...

This is a beginner's guide to identifying UK rock types. The guide has two main sections: background information on the structure and forces affecting the Earth in relation to rock formation a more ...

A compound is a substance that contains two or more elements close elementA pure substance that is made from only one type of atom ... of sedimentary rocks. All these different sedimentary ...