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Why would the crystal in an intrusive igneous rock be be larger than the crystals in a chemical sedimentary rock?
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∙ 6y ago
Intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals.
Dewitt Abbott
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Is an intrusive crystal bigger than an extrusive crystal?
Yes. Bigger crystals=Intrusive. Smaller crystals=Extrusive.
Why would you except the crystals in a intrusive rock to be larger than the crystals in a extrusive rock?
Minerals formed in intrusive rock cool more slowly than extrusive rock, which is closer to the surface. The longer cooling period allows more time for crystal formation.
A type of intrusive igneous rock with larg crystals?
Basically, all intrusive igneous rocks have large crystals. Because they are intrusive, they take a long time to cool down, and so there is a lot of time for crystal growth. That said, the biggest categories of intrusive igneous rocks are: Peridotite (ultramafic) Gabbro (mafic) Diorite (Intermediate) Granite (silicic/felsic) Granite is the most common one in the continental crust.
What size crystal do magma make?
it depends on if it is intrusive or extrusive (intrusive is below the earth and extrusive is at or above the earth) intrusive has a bigger crystal because it takes time to cool down.
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.
Why would the crystals in an intrusive igneous rock be larger than the crystal in a chemical sedimentary rock?
Intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals.
Is an intrusive crystal bigger than an extrusive crystal?
Yes. Bigger crystals=Intrusive. Smaller crystals=Extrusive.
Does a rock have a Crystal in it?
yes it does. Even a igneous rock and a sedimentary rock and a metamorphic rock all have crystals in them.
Does intrusive rock have smaller crystals than extrusive rock?
No. Intrusive rocks have larger crystals because of the increased time that the magma had available to cool. Elements necessary for mineral crystal growth can migrate more freely and thus form larger crystals during an extended fluid phase.
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).
Why would you except the crystals in a intrusive rock to be larger than the crystals in a extrusive rock?
Minerals formed in intrusive rock cool more slowly than extrusive rock, which is closer to the surface. The longer cooling period allows more time for crystal formation.
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.
What chemicals are in a crystal?
There is no single answer for this. Many chemicals form crystals, and the chemical determines the nature of the crystal. If you know what kind of crystal, then you know its chemical nature. For example, common clear quartz crystals are made up of SiO2 or Silicon dioxide. Copper sulfate crystals have an entirely different shape and a deep blue-green color, and both are different from crystals of common table salt.
Is graphite rock extrusive or intrusive?
GRAPHITE is a native mineral. It is metamorphic and it is effectively the highest grade of coal.
What crystal large or small can help identify an igneous rock as intrusive or extrusive?
As a general rule extrusive igneous rock crystals are very small, often microscopic, as the rock cools very rapidly. Conversely intrusive magma often cools so slowly that sizeable crystals can develop.
What type igneous is pumice intrusive small crystal or extrusive large crystal?
It is neither. Pumice is an extrusive highly vesicular igneous rock composed of volcanic glass and very tiny mineral crystals.
A type of intrusive igneous rock with larg crystals?
Basically, all intrusive igneous rocks have large crystals. Because they are intrusive, they take a long time to cool down, and so there is a lot of time for crystal growth. That said, the biggest categories of intrusive igneous rocks are: Peridotite (ultramafic) Gabbro (mafic) Diorite (Intermediate) Granite (silicic/felsic) Granite is the most common one in the continental crust.
