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Do intrusive rocks have fine grains small crystals or large crystals?
Wiki User
∙ 11y ago
No, because intrusive rocks form underneath the earth and cool very slowly which causes larger minerals and extrusive rocks form above the ground which cool very rapidly which causes very small minerals. so i hope you get it. Now I'm done.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agono because the slower it cooled the bigger the grains
Wiki User
∙ 13y agoThey have mostly large minerals as a result of their slow rate of cooling, mineralization and solidification.
Wiki User
∙ 11y agoCoarse grained which means it is rough or has big grains
Wiki User
∙ 11y agoit can vary on what kind of intrusive rock it is but they mainly have large crystals
Wiki User
∙ 11y agoIntrusive--large, visible crystals.
Extrusive--small or no visible crystals.
Wiki User
∙ 13y agono that is ingeous
Wiki User
∙ 12y agono they are solid rock
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Do intrusive rocks have large crystals because they cool quickly?
No. Intrusive igneous rocks have large crystals because they cool slowly.
What are large grains of intrusive rock that cools down slowly?
Intrusive Igneous rocks. Examples: obsidian, magma
Are igneous rocks formed from smalll minerals?
Not necessarily. Intrusive igneous rocks, especially pegmatites, can have large crystals.
What type of igneous rock has large mineral grains?
Intrusive igneous rocks since they have more time to cool, thus more time for the crystals o form and grow. So, examples of such igneous rocks will include:-Granite-Gabbro
Would you list intrusive rocks under rocks that form above the ground or below?
Intrusive rocks are Igneous rocks that have been formed underground. Igneous rocks are formed by the cooling of lava/magma. Igneous rocks are divided into two categories- intrusive and extrusive. Intrusive is when the magma cools slowly beneath the Earth's surface, which causes large crystals to form. When lava cools above the Earth's surface, it is called extrusive. Extrusive rocks have smaller crystals compared to intrusive, the difference always being noticable.
Do intrusive rocks have large crystals because they cool quickly?
No. Intrusive igneous rocks have large crystals because they cool slowly.
What are the properties of intrusive igneous rocks?
They have mineral grains of nearly equal size, and have large crystals because they were cooled slowly.
Which one has large grains between intrusive and extrusive igneous rocks?
intrusive
Which igneous rocks would contain the largest crystals?
Pegmatite. Individual crystals can be as large as a bathtub. Pegmatites are the last rocks to crystallize from a solidifying body of magma. The large size of the crystals results from the slow rate of cooling and the presence of large amounts of water dissolved in the magma.
Do igneous rocks have small crystals large crystals or no 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.
How does the rate of cooling influence crystal size of igneous rocks and how does that help you to distinguish between intrusive and extrusive igneous rocks?
The longer that magma is able to cool, the larger the crystals will be. Intrusive rocks will have larger crystals than extrusive rocks. For example granite (intrusive) has larger grains than rhyolite (extrusive).
Intrusive Igneous rocks are characterized by a coarse-grained texture because they contain?
Intrusive igneous rocks commonly have large mineral crystals.
Do all intrusive igneous rocks have crystals?
Yes. All intrusive igneours rocks and many extrusive rocks have crystals.
Do you think extrusive or intrusive igneous rocks are likely to have larger crystals?
If a rock has large crystals, it is an intrusive rock. Intrusive rocks form underneath the Earth's surface. Magma cools slowly so it has time to form large crystals. An example is granite, where you can see the crystals with your naked eye. Rocks that have small crystals are extrusive rocks. Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form. An example is obsidian, where you cannot visibly see the small crystals; it just looks like one black, glassy rock.
Do extrusive igneous rocks have small grains since intrusive has large?
That is correct.
What type of rock has glass like large crystals?
Intrusive igneous rocks, (Plutonic rocks)
What are large grains of intrusive rock that cools down slowly?
Intrusive Igneous rocks. Examples: obsidian, magma
