Why do igneous rocks have so many uses (anything from building stone to abrasive in toothpaste)?
A) They are harmful to the environment, so we use them to prevent harm done.
B) They are very easy to attain.
C) They are strong because their finely intergrown mineral crystals are difficult to fracture along grain boundaries.
D) They are cheap.

Question

Quizplus · Accepted Answer

Igneous rocks have finely intergrown mineral crystals which make them strong and difficult to fracture along grain boundaries. This property makes them useful for a variety of purposes, including building stone, abrasive in toothpaste, and many other industrial applications.

Why Do Igneous Rocks Have So Many Uses (Anything from Building