What are the most common Rock-Forming Minerals ?

The majority of minerals found in the rocks of the Earth’s Crust are silicates.

The Earth’s crust is made up of different kind of rocks. Most sedimentary rocks from accumulations of minerals which were weathered out of igneous rocks. Most of these minerals will be silicates.Silicates are a large group of minerals , all of which contains silica and oxygen. The commonest silicate family is feldspar.