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What is the main difference between andesite and diorite?
Both are igneous rocks of intermediate coposition.
Are all rocks either mafic or felsic?
No. First of all, the terms mafic and felsic generally only apply to igneous rock. even among igneous rocks, mafic and felsic are just ranges on a "spectrum" of composition. Other classifications and examples include ultramafic (peridotite), intermediate (andesite), and intermediate-felsic (dacite).
Igneous rocks are classified among there?
Igneous rocks are classified into two main categories: intrusive (or plutonic) and extrusive (or volcanic) rocks. Intrusive igneous rocks form from the slow cooling and solidification of magma beneath the Earth's surface, resulting in larger crystals, while extrusive igneous rocks form from the rapid cooling of lava at the surface, leading to smaller crystals. Additionally, they can be further categorized based on their mineral composition into felsic, intermediate, mafic, and ultramafic types.
What is in the formation of igneous rocks but not in formation of metamorphic rocks?
igneous rocks form within earths surface
Do we have igneous rock in Nigeria?
No we do not have igneous rocks in Nigeria because there are no volcanoes in Nigeria and it is lava or magma that make igneous rocks.
What is intermediate igneous rocks?
to have it
What is the main difference between andesite and diorite?
Both are igneous rocks of intermediate coposition.
Where do we find intermediate rocks?
Intermediate rocks contain roughly equal amounts of dark- and light-colored minerals. Igneous rock containing 56-65 percent silica.
What are intermediate materials in a rock cycle?
Intermediate materials in the rock cycle include sedimentary rocks like sandstone and shale, which are formed through the deposition and compaction of sediments. These rocks can undergo metamorphism to form metamorphic rocks like marble and schist. Metamorphic rocks, in turn, can melt to form magma that solidifies into igneous rocks like granite and basalt.
What kind of igneous rocks that are composed of an amphibole and intermediate plagioclase?
Granite and diorite contain both.
Is augite a igneous mineral?
Augite is a type of pyroxene. It is a common mafic-intermediate igneous mineral, but can also be found in some metamorphic rocks.
What two methods are used to group igneous rocks?
Igneous rocks can be either intrusive or extrusive, based on their location upon solidification from magma. Igneous rocks can also be grouped by chemistry and mineral content as felsic, intermediate, or mafic, mainly on the abundance of silicate minerals that are present.
How do you classify igneous rocks from other types of rock?
Igneous rocks are identified by first looking at the color index. Felsic igneous rocks contain mostly potassium feldspar. Intermediate igneous rocks contain mostly plagioclase feldspar. Mafic igneous rocks contain pyroxene, olivine, and plagioclase feldspar. Ultra mafic igneous rocks contain mostly olivine. Then igneous rocks are identified based on texture. For example, the texture of igneous rocks can be aphanitic, pegmatitic, phaneritic, glassy, vesicular, etc.
When molten rocks cools what rocks form?
igneous rocks
What are andesite rhyolite and trachyte all a type of?
They are all extrusive igneous (i.e. volcanic) rocks of intermediate to felsic composition.
What type of rock always forms directly from another rock?
Metamorphic. By contrast, igneous rocks form from lava or magma, and sedimentary rock form from sediment. Those things are formed from previous rocks, but constitute intermediate stages: igneous and sedimentary rocks are formed indirectly from previous rocks.
Are all rocks either mafic or felsic?
No. First of all, the terms mafic and felsic generally only apply to igneous rock. even among igneous rocks, mafic and felsic are just ranges on a "spectrum" of composition. Other classifications and examples include ultramafic (peridotite), intermediate (andesite), and intermediate-felsic (dacite).
