Rocks

Igneous Rocks

Pegmatite Rock Type, Composition, Formation, Occurrence & Uses

Pegmatite is a coarse-grained igneous rock that contains large crystals and minerals typically not found in other types of rocks. ...

Igneous Rocks

Peridotite Rock Type, Composition, Formation, Occurrence & Uses

Peridotite is a group of dense and coarse-grained ultramafic igneous rocks. The rock group contains kimberlite. The group can also ...

Igneous Rocks

Pumice Rock Type, Composition, Formation, Occurrence & Uses

Pumice is an igneous rock that has a light-colored and extremely porous appearance. It has been used in various industries ...