the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil..

Types of rocks

1. Igneous rocks

2. Sedimentary rocks

3. Metamorphic rocks

There are two types of igneous rocks:

I. 1)Intrusive igneous rocks

II. 2)Extrusive igneous rocks

1.Igneous rocks

There are three basic types of sedimentary rocks.

I. Clastic sedimentary rocks

II. Chemical sedimentary rocks

III. Organic sedimentary rocks

2. Sedimentary rocks

There are two basic types of metamorphic rocks.

I. Foliated metamorphic rocks

II. Non-foliated metamorphic rocks

3. Metamorphic Rocks

Rock cycle