How many different types of rocks are there in the world?

Answer 1

There are three different rock types which are called igneous; rocks formed by the cooling of lava and magma (molten rock), sedimentary; rocks formed when weathered particles of other rocks and fossils are compacted and cemented together at the bottom of rivers and the sea and metamorphic; formed when other rocks are changed by heat and pressure underground.

There are many individual rocks within each of these categories.

Answer 2

There are 3 main types of rocks, but they are divided into hundreds of different categories, and I'm not sure anybody's ever counted them up.

There are over 4,000 different types of minerals.

Answer 3

There are three main types of rocks: igneous, sedimentary, and metamorphic. These three types of rocks make up the majority of the Earth's crust, with each type having its own characteristics and formation processes. Additionally, within these main types, there are many different subtypes based on composition, texture, and origin.

Answer 4

The three, most often referenced types of rock are igneous, sedimentary, and metamorphic.

Answer 5

Start with the three basic kinds: igneous, sedimentary and metamorphic and then start breaking them down by things like chemical composition and density.

Answer 6

There are so many different type of rocks you can't possibly count them all.

Answer 7

There are three basic types of rocks igneous, sedimentary and metamorphic. There are hundreds of subdivisions based on the types and amounts of minerals the rock has.

Answer 8

Three different types