16+ Rock Names To Know

Every rock has a common name it’s been called, that’s why we created this article on Rock Names and the common names for rocks.

What’s A Rock?

According to Wikipedia, A Rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter.

It is categorized by the minerals included, its chemical composition and the way in which it is formed.

Rocks form the Earth’s outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere.

Rocks are usually grouped into three (3 types of rocks) main groups:

igneous rocks, sedimentary rocks and metamorphic rocks.

1. Igneous rocks are formed when magma cools in the Earth’s crust, or lava cools on the ground surface or the seabed.

2. Sedimentary rocks are formed by diagenesis or lithification of sediments, which in turn are formed by the weathering, transport, and deposition of existing rocks.

3. Metamorphic rocks are formed when existing rocks are subjected to such high pressures and temperatures that they are transformed—something that occurs, for example, when continental plates collide.

In our previous article where we listed about 20+ different types of rocks but let’s have a clear view on the names of these rocks.

Common Rock Names To Know

Rock Names
Popular Rock Names

• Basalt Rock

Basalt is a popular rock names and an aphanitic extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon.

• Andesite Rock

Andesite is another popular rock name and a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite.

• Quartzite Rock

Quartzite is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone.

Quartzite is a rock name, the sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts.

• Marble Rock

Marble is a metamorphic rock name composed of recrystallized carbonate minerals, most commonly calcite or dolomite.

• Sandstone Rock

Sandstone is one in a popular rock names and a clastic sedimentary rock composed mainly of sand-sized silicate grains.

• Gneiss Rock

Gneiss is a high grade metamorphic rock, meaning that it has been subjected to higher temperatures and pressures than schist.

• Metamorphic Rock

Metamorphic rocks arise from the transformation of existing rock names to new types of rock, in a process called metamorphism.

• Shale Rock

Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals and tiny fragments of other minerals, especially quartz and calcite.

• Amphibolite Rock

Amphibolite is a metamorphic rock name that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar.

• Conglomerate Rock

Conglomerate is a common clastic sedimentary rock names that is composed of a substantial fraction of rounded to subangular gravel-size clasts.

• Obsidian Rock

Another rock name is called Obsidian, which is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth.

• Schist Rock

Schist is a medium-grained metamorphic rock name showing pronounced schistosity.

• Phyllite Rock

Phyllite is a common rock names and type of foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation.

• Rhyolite Rock

Rhyolite is an extrusive igneous rock name, formed from magma rich in silica that is extruded from a volcanic vent to cool quickly on the surface rather than slowly in the subsurface.

• Arkose Rock

Arkose or arkosic sandstone is a detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar.

• Volcanic Rock

Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano.

Above are some of the popular and common rock names and also feel free to tell us what you think in the comments section about them.

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