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Pretty much all of them with the exception of things like obsidian, which is a glass and by definition not crystalline. Note that the crystals in question may be extremely small (microcrystalline).

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Name some rocks which have crystals?

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.


Igneous rocks with large crystals?

Igneous rocks with large crystals are known as intrusive or plutonic rocks. These rocks form underground as magma cools slowly, allowing large crystals to grow. Common examples include granite and diorite.


Do intrusive rocks have large crystals because they cool quickly?

No. Intrusive igneous rocks have large crystals because they cool slowly.


Is it true that intrusive rocks have similar crystals than extrusive rocks?

No, intrusive rocks typically have larger crystals due to slower cooling within the Earth's crust, while extrusive rocks have smaller crystals or a glassy texture because they cool quickly on the Earth's surface. The cooling rate affects crystal size in igneous rocks.


Is a sedimentary rock made of crystals?

Sedimentary rock is composed of minerals. The minerals may be in the form of particles of other rocks that are made of minerals themselves, as well as the minerals of the cementing material that holds those particles together. In certain cases, the minerals have formed as a result of the evaporation of or precipitation from saturated solutions containing the components of minerals. Sedimentary rocks can contain visible crystals as well as crystals that are not visible without the aid of magnification.

Related Questions

Do rocks have crystals?

Some rocks may contain crystals, but not all rocks contain crystals. Crystals can be found in rocks that have volcanic origin.


Are sugar crystals rocks?

No, sugar crystals are not considered rocks. Rocks are naturally occurring solid objects made up of minerals, while sugar crystals are formed from a dissolved substance (sugar) that solidifies as it crystallizes.


Are crystals the same as rocks?

No, crystals and rocks are not the same. Rocks are made up of one or more minerals, while crystals are solid substances in which the atoms are arranged in a highly ordered structure. Crystals can be found in rocks, but not all rocks contain crystals.


Which two of the three rock types appear to be made primarily of intergrown crystals?

Igneous and metamorphic rocks often appear to be made primarily of intergrown crystals due to the process of cooling and solidification for igneous rocks and recrystallization for metamorphic rocks. Sedimentary rocks are typically composed of compacted and cemented sediment particles rather than intergrown crystals.


How are foliated metamorphic rocks different from nonfoliated metamorphic rocks?

Foliated are made of interlocking crystals, non-foliated are not.


Can you turn rocks into crystals?

No, rocks and crystals are formed through different processes in nature. Rocks are made up of minerals, while crystals are solid structures with a specific repeating pattern of atoms or molecules. Crystals can form from solutions, gases, or solids, but simply turning a rock into a crystal is not possible.


How many different kinds of crystals are there?

What are the different kinds of crystals that made up rocks are called?


If a granite rocks was made of smaller crystals if would be called?

If a granite rock is made of smaller crystals, it would be called fine-grained or fine-grained granite.


Do all intrusive igneous rocks have crystals?

Yes. All intrusive igneours rocks and many extrusive rocks have crystals.


What are Igneous rocks that have large crystals and small crystals?

Igneous rocks with large crystals are called intrusive rocks, formed from magma cooling slowly beneath the Earth's surface, allowing for large crystals to form. Igneous rocks with small crystals are called extrusive rocks, formed from lava cooling quickly on the Earth's surface, resulting in small crystals due to rapid cooling.


What kind of cells are rocks made of?

No. Only living things are made of cells. Rocks are made of solidified minerals and crystals.


How are intrusive igneous rocks made?

They are made slowly. This is why they have a coarse-grained or rough texture. On the other hand there are extrusive igneous rocks, which are formed quuickly. These have a fine-grained or smoother texture. Intrusive rocks have more time to cool, so the mineral crystals can grow bigger, but extrusive rocks have lss time for their mineral crystals to grow.Igneous rocks form when magma cools and hardens.