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A couple of them are obsidian and pumice.

THEY ARE CALLED EXTRUSIVE IGNEOUS ROCKS...........

THEY ARE SO CALLED BECAUSE THEY ARE FORMED FROM THE LAVA

THAT HAS BEEN COOLED........

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Q: What kind of igneous rock forms outside of a volcano?
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Related questions

What kind of rock forms from the lava of an erupting volcano?

Extrusive igneous rock.


What kind of rock is formed after a volcano erupts?

Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.


Volcano rock is what kind of rock?

igneous


What kind of volcano has igneous rocks?

All volcanoes produce igneous rocks.


What kind of igneous rock will form when a volcano sends lava into the air?

extrusive igneous rock


What kind of rocks will find around an erupting volcano?

Igneous Rocks


What kind of rock forms when lava cools?

Either a type of lava called AA (ah-ah) comes out of the volcano of a type of lava called pahoho comes out.An Extrusive Igneous Rock.


What kind of rock will from when a volcano erupts?

Volcanoes produce extrusive igneous rock.


When a volcano erupts quietly what kind of mountains forms?

a shield volcano


What kind of rock forms from magma?

igneous rock


What kind of volcano forms when magma is being forced up?

IT IS A Sheild volcano


What kind of igneous rock forms when lava cools at earths surface?

Such rock is extrusive igneous rock.