Here's why:

* Abundance: Silicates make up over 90% of the Earth's crust. They are found in a wide variety of rocks, from granite to basalt to sandstone.

* Composition: Silicates are composed of silicon and oxygen, the two most abundant elements in the Earth's crust.

* Diversity: The silicate group is incredibly diverse, with many different structures and compositions. This results in a wide variety of minerals, each with its own unique properties.

Some common examples of silicate minerals include:

* Quartz: A very common and hard mineral found in many rocks.

* Feldspar: A group of minerals that are the most abundant minerals in the Earth's crust.

* Mica: A group of minerals that are easily cleaved into thin sheets.

* Clay: A group of minerals that are very fine-grained and often found in soils.