All About Metamorphic Rocks (below)
Metamorphic rocks are form by heat and pressure.
Metamorphic Rocks
Some common uses for metamorphic rocks are building materials and sculptures. Also, roofs and countertops.
Marble
Marble is a non-foliated and is produced from the metamorphism of limestone.It is a white rock.
Schist
Schist contains a lot of mica in it. It is a combination of phyllite and gneiss.
Amphibolite
It is non-foliated and amphibole and plagioclase and usually with very little quartz.
Hornfels
Hornfels is formed by mudstone and shale. Its fine grained and has a banded texture.
Foliated Rocks
Metamorphic Rocks that have their grains arranged in parallel layers aka bands.
Nonfoliated Rocks
The mineral grain in these rocks are picked in a random order.