Are people able to dig igneous rocks?

So, you can’t really dig through intrusive igneous rocks, at least not with hand tools. You could always try a pick instead, but it’s still hard work. The rocks tend to have very random, angular fractures and they will tend to splinter a lot, rather than just breaking up gently. read more

Igneous rocks: (from the Greek word for fire) it form when magma cools off. They do not contain fossils or organic matter. There are about 700 different types of igneous rock. read more

In many igneous rocks, large mineral crystals "float" in a fine-grained groundmass. The large grains are called phenocrysts, and a rock with phenocrysts is called a porphyry; that is, it has a porphyritic texture. Phenocrysts are minerals that solidified earlier than the rest of the rock, and they are important clues to the rock's history. read more