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Olivine is not an igneous rock itself; rather, it is a mineral commonly found in igneous rocks. It is a silicate mineral composed of magnesium and iron and is typically found in mafic and ultramafic rocks such as basalt and peridotite. Olivine can crystallize from magma and is often one of the first minerals to form during the cooling of molten rock.
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An igneous rock that contains mostly pyroxene and olivine has .?
an ultramafic composition
Is dunite an intrusive or extrusive igneous rock?
Dunite is an intrusive igneous rock, specifically a type of ultramafic rock composed mostly of olivine. It forms deep within the Earth's crust through the crystallization of magma.
Would you find quartz and olivine in the same igneous rock?
Quartz and olivine typically do not occur together in the same igneous rock. Quartz is commonly found in felsic rocks, which are rich in silica, while olivine is prevalent in mafic and ultramafic rocks, which have lower silica content and are rich in magnesium and iron. The contrasting mineral compositions reflect different cooling histories and magma compositions. Therefore, while both minerals can be found in igneous rocks, they are usually indicative of different rock types.
What rock is formed when lava cools down?
When lava cools down quickly at the surface of the Earth, it forms an igneous rock called basalt. Basalt is dark in color, fine-grained, and contains minerals such as olivine and pyroxene.
What is a coarse-grained igneous rock composed mainly of Olivine?
A coarse-grained igneous rock primarily composed of olivine is known as peridotite. This rock is typically found in the Earth's mantle and is a significant source of magnesium and iron. Peridotite can also serve as a parent rock for other types of igneous rocks through processes like partial melting. Its texture is characterized by large, visible crystals, which is indicative of a slow cooling process beneath the Earth's surface.
Is peridot a igneous rock or is it something else?
Peridot is a gemstone composed of the mineral olivine. Olivine is a common mineral found in igneous rocks such as basalt and peridotite. So, while peridot itself is not an igneous rock, it is closely associated with igneous rocks due to its mineral composition.
What igneous rock contains mostly pyroxene and olivine?
Ultramafic igneous rocks are comprised mostly of olivine and pyroxene. Examples include peridotite (pegmatic and porphyritic) and komatite.
An igneous rock that contains mostly pyroxene and olivine has .?
an ultramafic composition
What igneous rock may be formed by fractional crystallization of olivine and pyroxene?
ultramafic
What greyish igneous rock contains plagioclase feldspar and small amounts of quartz and olivene?
None, you don't get quartz and olivine in the same igneous rock.
How could you get Olivine?
Mining deep in the Earth cores. Mining deep in the Earth cores. You can also find Olivine in the Igneous rock Pyroxinite. Olivine is the same thing as Peridot
What would be one of the first minerals to crystallize from liquid rock in a mafic igneous sill?
One of the first minerals to crystallize from liquid rock in a mafic igneous sill would likely be olivine. Olivine has a high melting temperature and tends to crystallize early in the cooling process due to its simple mineral structure.
If an igneous rock heats just to melting which mineral will melt first?
In an igneous rock, the mineral that typically melts first when heated to melting point is usually olivine. This is because olivine has a relatively low melting point compared to other common minerals found in igneous rocks, such as feldspar and quartz. As the temperature increases, olivine will begin to melt before the higher-melting-point minerals do.
What rock contains high density minerals such as olivine?
Mafic, igneous rocks
How did an olivine rock got its name?
Olivine rock got its name from its olive-green color, which comes from the mineral olivine found within it. Olivine is a common mineral in the Earth's mantle and is often found in igneous rocks like basalt and gabbro.
What is plagioclase feldspar with quartz and olivine?
Plagioclase feldspar is a common mineral in igneous rocks, while quartz is a mineral often found in a variety of rocks. Olivine is a green mineral commonly found in mafic igneous rocks. When all three minerals are present in a rock, it typically indicates a mafic igneous rock such as basalt or gabbro.
Is peridot an igneous metamorphic or sedimentary rock?
Peridot is neither an igneous, metamorphic, nor sedimentary rock. It is a gemstone variety of the mineral olivine, which is part of the mantle beneath the Earth's crust. Peridot is typically formed in the mantle and brought to the surface through volcanic activity.
