What is an intrusive igneous rock and for what is it used?

Intrusive/Plutonic igneous rocks are different from extrusive in that they crystallize below the earth's surface, and because they take longer time to crystallize, they have crystals of bigger size. read more

Almost 95 percent of the surface of the Earth is composed of igneous rock, and scientists have found more than 700 different types of igneous rocks. Pumice is an igneous rock with many cosmetic applications. Because of its gently abrasive nature, it is used as an ingredient in toothpaste, as well as some other cosmetic products. read more

Intrusive/Plutonic igneous rocks are different from extrusive in that they crystallize below the earth’s surface, and because they take longer time to crystallize, they have crystals of bigger size. Almost each intrusive igneous rock has exteusive opponent that is similar in composition but different in crystal size. read more

Granite is the most common intrusive igneous rock as the continental crust is composed of granite. Granite has mineral crystals that can be seen clearly with the naked eye. Here, you can see black crystals, white crystals, and pink crystals, with each color representing a different mineral. read more