Some rocks may contain crystals, but not all rocks contain crystals. Crystals can be found in rocks that have volcanic origin.
All rocks do not have crystals. This is common feature of igneous rocks . The crystals are seen by slicing the rock.
Yes. All rocks apart from natural glass contain crystals.
Yes. Igneous rocks (with the exception of volcanic glass) are made entirely of mineral crystals.
Absolutely... Yes! Igneous rocks contains crystals.
No. Extrusive igneous rocks like obsidian and pumice have cooled so rapidly that crystals do not have a chance to form. They are essentially natural glass.
yes. all rocks have minerals.
yes
no
What rocks contain 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
you would find igneous rocks with small crystals at the bottom of the volcano, this is because when the rocks crack. It brakes apart into igneous rocks
What rocks contain 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
Yes. All intrusive igneours rocks and many extrusive rocks have crystals.
you would find igneous rocks with small crystals at the bottom of the volcano, this is because when the rocks crack. It brakes apart into igneous rocks
Not all of them. Volcanic glass does not have crystals.
No.
By definition, yes. In contrast, aphanitic rocks do not have visible crystals.
Granite, gabbro, and diorite are a few igneous rocks that forms crystals. Igneous rocks that form visible crystals are intrusive igneous rocks, rocks that form under the earth's surface.
how long they stayed in the volcano; how much time the crystals had to form
All rocks have crystals, or at least crystalline structures. Sedimentary rocks may not have crystals as such, but the individual grains have internal crystal structures. All magmatic and metamorphic rocks have crystals, though they may be too small to be seen without the aid of a microscope. Only possible exception is Obsidian (volcanic glass) which may be amorphous.