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Granitic igneous rocks are light colored rocks of a low density. Granitic magma is thick and stiff and contains a lot of silicon and oxygen. Granitic magma can build up a great deal of pressure, which is released during violent volcanic eruptions.
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What are dark colored rocks called?
If you are referring to igneous rocks, they are classified as mafic.
Why are dark igneous rocks heaver then light igneous rocks?
Dark igneous rocks usually have higher amounts of heavier elements such as iron. Light-colored igneous rocks tend to be richer in lighter elements like sodium and aluminum.
In general how does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Light-coloured igneous rocks, such as granite, have a higher silica content and lower iron and magnesium than darker ones, such as basalt. Since iron and magnesium are very dense minerals, this makes darker igneous rocks more dense than lighter ones.
Light colored igneous rocks are less what than dark igneous rocks?
basaltic rocks are darker because they are more dence granitic rocks are less dence so they are lighter
Are dark colored igneous rocks low in silicate minerals?
They are not low in silicate minerals. They are still primarily composed of them. However, the amount of silica in them is lower than in the lighter-colored rocks. The lightest igneous rocks (felsic) are at least 70% silica while the dark ones (mafic) are between 45% and 52% silica. Silica content below 45% is deemed ultramafic.
What is dark colored rocks called?
igneous
What are dark colored rocks called?
If you are referring to igneous rocks, they are classified as mafic.
How does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
What property is common to most dark-colored igneous rocks?
Most dark-colored igneous rocks have a high density.
What property is common to most dark colored igneous rocks?
Most dark-colored igneous rocks have a high density.
Light-colored igneous rocks are less what than dark-colored igneous rocks are?
less dense
What is the dark colored igneous rock with rich in iron and magnesium?
These rocks are called mafic igneous rocks, such as basalt. == ==
How does the density of a light colored rock differ from the density of dark colored rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
Igneous rocks that are dense and dark colored they form from magma that is rich in iron and magnesium and poor in silica?
Igneous rocks that are dense and dark-colored are called basaltic rocks. They are formed from magma that is rich in iron and magnesium and poor in silica content.
Mafic igneous rocks tend to form?
Dark colored rocks.
What is a dark colored rock?
Mafic igneous rocks, like basalt, are dark colored and low in silica.
Are basaltic igneous rocks high in iron and magnesium?
The dark colored igneous rocks that are rich in calcium and magnesium are called mafic igneous rocks. Basalt is one example of these. Their relative density is higher than three.
