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Is olivine mafic or felsic?
Olivine is a mafic mineral. It is most abundant in ultramafic rocks.
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 color are peridotites?
Peridotites are typically olive green to brown in color due to the presence of olivine and other minerals like pyroxene and spinel. This coloration gives peridotites their characteristic appearance.
What type of rock contains high-density minerals such as olivine?
Ultramafic rocks, such as peridotite, are known to contain high-density minerals like olivine. These rocks form deep within the Earth's mantle and often have a coarse-grained texture due to their slow cooling process. Olivine is a common mineral found in ultramafic rocks due to its high melting point and stability under high-pressure conditions.
Which types of igneous rocks are composed of at least 50 percent olivine?
Peridotite and dunite are examples of igneous rocks that are composed of at least 50 percent olivine. Olivine is a common mineral in these ultramafic rocks, giving them their distinctive color and composition.
Is olivine mafic or felsic?
Olivine is a mafic mineral. It is most abundant in ultramafic rocks.
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 color are peridotites?
Peridotites are typically olive green to brown in color due to the presence of olivine and other minerals like pyroxene and spinel. This coloration gives peridotites their characteristic appearance.
Is olivine an igneous rock?
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.
An igneous rock that contains mostly pyroxene and olivine has .?
an ultramafic composition
Which igneous rock out of granite basalt andesite and peridotite has the lowest silica SiO2 content?
Peridotite, a type of ultramafic rock composed largely of the mineral olivine, has the least silica.
What type of rock contains high-density minerals such as olivine?
Ultramafic rocks, such as peridotite, are known to contain high-density minerals like olivine. These rocks form deep within the Earth's mantle and often have a coarse-grained texture due to their slow cooling process. Olivine is a common mineral found in ultramafic rocks due to its high melting point and stability under high-pressure conditions.
What igneous rock may be formed by fractional crystallization of olivine and pyroxene?
ultramafic
Which types of igneous rocks are composed of at least 50 percent olivine?
Peridotite and dunite are examples of igneous rocks that are composed of at least 50 percent olivine. Olivine is a common mineral in these ultramafic rocks, giving them their distinctive color and composition.
Where is peridotite found?
Peridotite is a dense, coarse-grained plutonic rock that contains a large amount of olivine. Spinel-bearing peridotites and plagioclase-bearing peridotites are foliated.
What is the density of dunite?
a bout 3.27 (most of the time 3.3 is considered)
Why vesicular texture is not associated with peridoties?
Vesicular texture is characterized by the presence of numerous gas bubbles, which typically form during rapid cooling and solidification of lava that is rich in volatiles. Peridotites, however, are ultramafic igneous rocks primarily composed of olivine and pyroxene, and they form at greater depths in the Earth's mantle under high pressure and temperature conditions where gas escape is minimal. This depth prevents the formation of vesicles, making vesicular texture incompatible with peridotites. Instead, peridotites generally exhibit a coarse-grained, granular texture typical of slow crystallization in a high-pressure environment.
