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How is andesite different from rhyolite and basalt?
Andesite is an intermediate volcanic rock with a mineral composition between basalt and rhyolite. Basalt is a dark-colored volcanic rock low in silica and high in iron and magnesium, while rhyolite is a light-colored volcanic rock high in silica and lower in iron and magnesium. Andesite has a medium silica content falling between basalt and rhyolite.
Do basalt and rhyolite form magma?
No. Both basalt and rhyolite are formed from molten rock erupts from a volcano.
Is rhyolite silica rich or silica poor?
Rhyolite is silica-rich, containing over 70% silica. It is an extrusive igneous rock with a fine-grained texture that forms from the rapid cooling of magma rich in silica content.
What has a higher density rhyolite or basalt?
Basalt has a higher density than rhyolite. This is because basalt is a mafic rock with higher concentrations of iron and magnesium, which increases its density compared to rhyolite, which is a felsic rock with lower concentrations of these heavy elements.
Which igneous rock is an extrusive rock?
Basalt, Rhyolite, Obsidian and Andesite. There's many more but these are the main ones.
What has a more felsic composition rhyolite or basalt?
Rhyolite has a more felsic composition compared to basalt. Rhyolite is rich in silica and aluminum, while basalt is richer in magnesium and iron.
Does rhyolite have a more mafic composition than basalt?
No, rhyolite has a more felsic composition than basalt. Rhyolite is rich in silica, which makes it a felsic rock, while basalt is more mafic due to its lower silica content.
Which rock is most felsic out of rhyolite andesite and basalt?
Rhyolite is the most felsic rock out of rhyolite, andesite, and basalt. Felsic rocks have a higher silica content and are associated with continental crust. Rhyolite is typically light in color and has a high silica content, making it more felsic compared to andesite and basalt.
Which has a greater percentage of biotite in it rhyolite or basalt?
Rhyolite typically has a greater percentage of biotite compared to basalt. This is because rhyolite is a silica-rich volcanic rock that contains more biotite, a mica mineral, which forms in silica-rich environments. Basalt, on the other hand, is a silica-poor volcanic rock that generally contains lower amounts of biotite.
Is rhyolite a basaltic composition?
No. Basalt is a low-silica igneous rock while rhyolite is high-silica. As far as volcanic rocks go, they are essentially opposites.
What rock has a lower density basalt or rhyolite?
Basalt has a lower density compared to rhyolite. Basalt is a mafic rock with higher iron and magnesium content, which makes it denser. Rhyolite, being a felsic rock with higher silica content, is less dense.
Which rock has more silica granite or basalt?
Granite has more silica content than basalt. Granite is a felsic rock with higher silica content, while basalt is a mafic rock with lower silica content.
What are the main magma rocks?
The main magma rocks are basalt, andesite, and rhyolite. Basalt is mafic and extrusive, andesite is intermediate in composition and extrusive, and rhyolite is felsic and extrusive.
What are some different types of lava rocks?
Some different types of lava rocks include basalt, andesite, rhyolite, and obsidian. Basalt is the most common type and is dark in color with a fine-grained texture, while andesite is similar but contains more silica. Rhyolite is light in color with a high silica content, and obsidian is a dark, glassy rock formed from rapidly cooled lava.
How is andesite different from rhyolite and basalt?
Andesite is an intermediate volcanic rock with a mineral composition between basalt and rhyolite. Basalt is a dark-colored volcanic rock low in silica and high in iron and magnesium, while rhyolite is a light-colored volcanic rock high in silica and lower in iron and magnesium. Andesite has a medium silica content falling between basalt and rhyolite.
What are two examples of fine-grained igneous rock?
Two examples of fine-grained igneous rocks are basalt and rhyolite. Basalt is a dark-colored rock with a composition rich in iron and magnesium, while rhyolite is light-colored and has a high silica content. Both rocks form from the cooling and solidification of molten magma.
Is rhyolite high in silica?
Yes, rhyolite is high in silica. It is a volcanic rock with silica content of around 70% or more. This high silica content contributes to its high viscosity and explosive nature during volcanic eruptions.
