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Rhyolite is not a mafic rock, but a felsic rock, high in silicates, and similar to granite in composition.
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What has a more felsic composition rhyolite or basalt?
Rhyolite has a more felsic composition than basalt.
Which igneous rock has the same chemical composition as basalt but a different grain size?
a hot dogs mother in laws mother to the horse in the backyard
Why are mafic minerals dark in color?
No. Felsic rocks are light-colored and high in silica. Mafic rocks are generally dark-colored and low in silica.
What type of igneous rock cools faster?
extrusive rocks cools faster because it is in open air or under the sea
What is the lithosphere made of mafic or felsic?
Its made up of both. Oceanic crust is mostly mafic magma (basalt) and continental crust is mafic and felsic. The lithosphere also contains the upper portion of the upper mantle which is mostly mafic. The earths crust is 60% Si02 (silicates). Felsic rocks are much more silicate heavy than mafic. So one would assume that the crust is more felsic than mafic. That's just my conceptual thought process so don't take me on my word. Then again, the lithosphere also contains the upper mantle which is heavily mafic. So maybe the lithosphere in total is more mafic? Basically just typing thoughts down as they enter my brain. Answer I know for certain- Lithosphere is mafic and felsic.
What has a more felsic composition rhyolite or basalt?
Rhyolite has a more felsic composition than basalt.
Does rhyolite or basalt have more silica in it?
rhyolite
How is andesite different from rhyolite and basalt?
There are rocks that are extrusive (formed quickly on the surface of the earth) or intrusive (formed within the earth under slow cooling). Both types of extrusive or intrusive rocks can vary in composition from mafic (high iron and magnesium content) to silicic (less heavy ions like Fe and Mg, but with more of the lighter elements like Ca, Na, K, etc.). Extrusive rocks range from most mafic to less mafic as such: Basalt, Andesite, Rhyolite (and are all fine-grained b/c they cooled quickly). Intrusive rocks that cool more slowly and have larger crystals range from most mafic to less mafic as such: Gabbro, Diorite, Granite. Basalt and gabbro have a similar composition, just the crystal size differs from different cooling rates (same for rhyolite and granite).
Does mt etna have mafic or felsic lava?
The lavas are intermediate in composition, mostly andesite with some more felsic dacites.
Which igneous rock has the same chemical composition as basalt but a different grain size?
a hot dogs mother in laws mother to the horse in the backyard
What rock forms volcanic lava cools?
Extrusive igneous rock. To be more specific you have to know the composition of the lava. The most common type is basalt, but other types include andesite, dacite, and rhyolite.
Can I get more examples of igneous rocks?
Peridotite, andesite, pumice, rhyolite, obsidian, granite, and basalt.
What are some more examples extrusive igneous rocks?
Some other examples are Andesite, Basalt, Rhyolite, and Scoria.
Why are mafic minerals dark in color?
No. Felsic rocks are light-colored and high in silica. Mafic rocks are generally dark-colored and low in silica.
Which igneous rock is an extrusive rock?
Basalt, Rhyolite, Obsidian and Andesite. There's many more but these are the main ones.
Does andesite thus have more or less dark minerals?
That depends on what you are comparing it to. It has more dark minerals than rhyolite but fewer than basalt.
What type of igneous rock cools faster?
extrusive rocks cools faster because it is in open air or under the sea
