Question

The most common group of silicates is ________.

Answer 1

Feldspar

Step-by-step explanation:

Feldspar make up 50% of the Earth's crust, this type of silicate is formed from magma found in intrusive and extrusive rocks.

Silicate is found in the Earth's crust, it is made up of oxygen and silicon constructed in a tetrahedral shape.

Answer 2

The most common group of silicates is quartz. Silicate minerals is the most abundant mineral found in the crust. About 90% of the crust contains these minerals. Silicate minerals includes quartz, mica, feldspar, pyroxene, amphobole and olivine. About 12% of these silicates is quartz.