An igneous rock cooled very rapidly as it was formed because it was exposed to air. What type of rock could it be?

Question

fortisdea13 · Answer

It would be an extrusive rock.

anonymous · Answer

IGNEOUS EXTRUSIVE

133 · Answer

It would be an extrusive igneous rock, also known as a volcanic rock.

damielia · Answer

Extrusive igneous rocks form when magma reaches the Earth's surface a volcano and cools quickly. Most extrusive (volcanic) rocks have small crystals. Examples include basalt, rhyolite, andesite, and obsidian.

misssmartiez · Answer

There are two major categories on igneous rocks. Extrusive and Intrusive. However, this one falls under the columns of extrusive igneous because it is cooled quickly. Also, they are characterized by their fine-grained textures. Did you know that fine-grained rocks are known and or called aphanitic rocks? The most common extrusive rocks are basalt.

Intrusive on the other hand, grows more slower and subtle. Unlike Extrusive rocks, which doesn't allow large crystal grains to immaculate hence it cools too fast, intrusive rocks do. They are deep within the earth, so that explains why they cool slower. Rocks with visible crystals of about the same measure and or size, are said to possess phaneritic texture.

So the people above me are correct.

misssmartiez · Answer

Also, try to explain why, helpers, to better assist this lovely owlet ;)