Yes, they can. Extrusive igneous rocks, which form outside the Earth's surface, often contain small or no crystals, because they cool quickly and the particles in the lava do not have much time to arrange themselves. Intrusive rocks, which form inside the Earth, generally have large crystals because they cool slowly. Granite is an example of an igneous rock with large crystals.
it depends on how quickly the rock cooled if it cooled quick there will have small crystals if it cooled slowly it will have large crystals
No, they do not have bands of crystals but they are all crystalline.
Yes, igneous rocks may have inter-grown mineral crystals. The slower the rock cools, the larger the crystals.
Sure. They are made of crystals.
yes
It depends on the type of igneous rock. Intrusive igneous rocks such as granite have large crystals, extrusive igneous rocks may have small crystals as in basalt or no crystals as in pumice.
Such rocks are called porphyritic.
Igneous rocks
That it cooled very slowly.
Intrusive igneous rocks commonly have large mineral crystals.
It depends on the type of igneous rock. Intrusive igneous rocks such as granite have large crystals, extrusive igneous rocks may have small crystals as in basalt or no crystals as in pumice.
Such rocks are called porphyritic.
Igneous rocks will develop large crystals is they cool slowly underground.
quartz
Igneous rocks will develop large crystals is they cool slowly underground.
Igneous rocks will develop large crystals is they cool slowly underground.
No. Intrusive igneous rocks have large crystals because they cool slowly.
Not necessarily. Intrusive igneous rocks, especially pegmatites, can have large crystals.
Igneous rocks
That it cooled very slowly.
Phaneritic.
Intrusive igneous rocks commonly have large mineral crystals.