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Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.

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15y ago

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Name a volcanic rock?

Obsidian, basalt, andesite, pumice.


A black rock formed from cooled lava?

Obsidian


What is the difference between basalt and obsidian?

Basalt is a dark-colored volcanic rock formed from the rapid cooling of lava, while obsidian is a dark volcanic glass formed from the rapid cooling of lava with high silica content. Basalt has a crystalline structure, while obsidian is amorphous and often exhibits conchoidal fracturing. Basalt is typically denser and more resistant to weathering compared to obsidian.


What is black volcanic rock?

A few varieties including basalt, obsidian, and scoria.


What type of rock has obsidian and basalt?

They are both Igneous. I hope this answered your question.!


What are three types of igneous rock?

Three types of igneous rocks are basalt, granite, and obsidian. Basalt is a dark-colored fine-grained rock, granite is a light-colored coarse-grained rock, and obsidian is a natural glass formed from rapidly cooled lava.


What is an igneous rock that forms at the surface?

Igneous rock formed at or near the surface is referred to as extrusive igneous rock, such as basalt and obsidian.


What are examples of extrusive rock?

Basalt, Andesite, Rhyolite, Obsidian, Pumice, Tuff, Ash (Lava).


Which rock am igneous extrusive black?

Basalt, pumice, and obsidian are all extrusive igneous rocks which can appear as black rock.


What type of rock can be changed into igneous rock?

obsidian,basalt,granite,pumice,tuff,diorite,gabbro,andesite,ect


Which igneous rock is an extrusive rock?

Basalt, Rhyolite, Obsidian and Andesite. There's many more but these are the main ones.


What type of rock is a smooth black rock?

A smooth, black rock is likely to be basalt. Basalt is an extrusive igneous rock that is commonly dark in color and has a fine-grained texture, giving it a smooth appearance.