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Mantle rocks shallower than about 410 km depth consist mostly of olivine, pyroxenes, spinel-structure minerals, and garnet.
These mionerals make up rocks called peridotite, dunite (olivine-rich peridotite), and eclogite. We know these from xenoliths brought up with magmas.
Between 410 km and 650 km, olivine is no longer stable and is replaced by its polymorphs wadsleyite and ringwoodite.
Below about 650 km, all of the minerals of the upper mantle begin to become unstable due to the extreme pressure and elevated temperatures. It is difficult for us to know which minerals will be stable in these conditions but we believe silicate perovskites and ferropericlase will prediminate (and diamond).
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what are plants that make up earths crust?
The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
What is the most abundant component of mantle rocks?
The most abundant component of mantle rocks is silicate minerals, such as olivine, pyroxene, and garnet. These minerals make up the majority of the Earth's upper mantle and are rich in magnesium and iron.
How are minerals extracted from the mantle?
Minerals are extracted from the mantle through processes such as volcanic eruptions, where molten rock from the mantle (magma) reaches the surface and solidifies into mineral-rich rocks. These mineral-rich rocks are then mined or quarried to extract the desired minerals. Additionally, some minerals from the mantle may be found in oceanic crust and are extracted through underwater mining operations.
In which form do many minerals occur naturally on the earths surface?
Many minerals occur naturally on the earths surface in rock form
Where on earth are minerals found?
Minerals make up the rocks of earth, so minerals are found wherever there are rocks at the surface. Water too is a mineral so this includes the oceans.
What is the earth's mantle filled with?
The Earths mantle is filled with ferromagnesian rocks with minerals such as Olivine and Pyroxene.
What does rocks in earths mantle contain a higher percentage of what than rocks in earths crust?
iron and magnesium
How are the mantle and crust alike?
They both have minerals and rocks
What is the mantle filled with?
The Earths mantle is filled with ferromagnesian rocks with minerals such as Olivine and Pyroxene.
When rocks return to earths mantle to earths mantle they can eventually melt and become magma. and are the main factors that control this change.?
heat and pressure
what are plants that make up earths crust?
The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
Why are there almost no extrusive ultra-basic rocks in earths crust?
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
What is the most abundant component of mantle rocks?
The most abundant component of mantle rocks is silicate minerals, such as olivine, pyroxene, and garnet. These minerals make up the majority of the Earth's upper mantle and are rich in magnesium and iron.
Who studies rocks minerals and earths forms?
geologists
How are minerals extracted from the mantle?
Minerals are extracted from the mantle through processes such as volcanic eruptions, where molten rock from the mantle (magma) reaches the surface and solidifies into mineral-rich rocks. These mineral-rich rocks are then mined or quarried to extract the desired minerals. Additionally, some minerals from the mantle may be found in oceanic crust and are extracted through underwater mining operations.
In which form do many minerals occur naturally on the earths surface?
Many minerals occur naturally on the earths surface in rock form
What type of scientist studies rocks minerals and earths landforms?
geologist
