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The three main types of rocks are igneous, metamorphic, and sedimentary.

en.wikipedia.org/wiki/List_of_rock_types

The following is a list of rock types recognized by petrologists. There is no agreed number of specific types of rocks. Any unique combination of chemical ...

www.learner.org/interactives/rockcycle/types.html

Types of Rocks. Rocks are not all the same! The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among ...

jersey.uoregon.edu/~mstrick/AskGeoMan/geoQuerry13.html

Just as any person can be put into one of two main categories of human being, all rocks can be put into one of three fundamentally different types of rocks.

www.kidsloverocks.com/html/types_of_rocks.html

To help you identify the types of rocks in your collection, let's look at the characteristics that make up the three types. First, we will look at igneous rocks.

geology.com/rocks

Photographs and information for a large collection of igneous, metamorphic and sedimentary rocks. Geology.com.

.ask.com/youtube?q=Type+of+Rocks&v=17l2LrjZi9o
Aug 10, 2015 ... You will learn about "3 Types of Rocks" in this video. Rocks can be broadly divided into three types on the bases of their formation, namely ...

www.brainpop.com/science/earthsystem/typesofrocks

Do rocks rock your world? Then you'll love following Tim and Moby as they take you on a tour of the types of rocks that can be found on and inside Earth. In this ...

en.wikibooks.org/wiki/Identifying_Rocks_and_Minerals/Types_of_Rocks

There are three different types of rocks: Igneous, Sedimentary, and Metamorphic. The difference between each type is in how they are formed.

en.wikibooks.org/wiki/High_School_Earth_Science/Types_of_Rocks

Have you ever heard something described as "rock solid"? We usually use the phrase to describe something that does not and cannot change. It also means ...