Amphibolite: Amphibolite is a coarse-grAmphibolite is a coarse-grained metamorphic rock that is composed mainly of green, brown, or black amphibole minerals and plagioclase feldspar. The amphiboles are usually members of the hornblende group. It can also contain minor amounts of other metamorphic minerals such as biotite, epidote, garnet, wollastonite, andalusite, staurolite, kyanite, and sillimanite. Quartz, magnetite, and calcite can also be present in small amounts.

The major types of metamorphic rocks are detailed here, which include regional, contact and mechanical metamorphism.

Metamorphic rocks are some of the most varied and complex rocks found in nature. Because they can be formed from any other type of rock, there is almost no limit to their variety. Being able to properly identify a metamorphic rock can tell you a lot about its geologic history. There are many different types …

Quartzite is a nonfoliated metamorphic rock composed almost entirely of quartz. It usually forms from the metamorphism of sandstone.

Want to impress your friend with your rock knowledge? Here are 30 types of rocks that you ought to know to get you started.

Conglomerate is a clastic sedimentary rock composed of rounded clasts that are over two millimeters in size and bound together by a cement that is usually composed of calcite or quartz.

Skarns are rocks that form when magma intrudes a nearby rock mass. The magma, intense heat, chemically active fluids and the nearby rock react with one another to form a new metamorphic rock known as skarn.

What are metamorphic rocks. What are they made of. How they look like. How are they formed. Learn their types with characteristics, examples, pictures, & fun facts.

Rocks do not have a definite composition of mineral constituents. Feldspar and quartz are the most common minerals found in rocks. There are many different kinds of rocks which are grouped under three families on the basis of their mode of formation.