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When magma forms by partial melting which are the first mineral pairs that melt first?
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At what depth does granitic magma form?
Granitic magma forms at relatively shallow depths, typically between 1 and 10 kilometers beneath the Earth's surface. This type of magma is formed through the partial melting of continental crust, which is composed mainly of granitic rocks.
When a mineral forms a definite shape a mineral has formed a?
It forms a crystal.
Why does alkalic basalt contain less silica than tholeiites?
The magma that forms alkalic basalt forms under conditions with a higher fraction of partial melting that the magma that forms tholeiitic basalt. This means that the resulting alkalic melt contains a higher percentage of the minerals with a low silica content.
Which mineral commonly forms porphyroblasts?
Garnet commonly forms porphyroblasts.
What happens when a subducting plate reaches about 100 km depth?
When the subducting plate reaches about 100 kilometers (60 miles) into the Earth's hot mantle, it triggers partial melting of the overlying plate and forms new magma. Some of the magma rises and erupts as volcanoes.
What does most magma forms from?
Magma is the result of partial melting of crustal rocks. It is a eutectic melt product.
At what depth does granitic magma form?
Granitic magma forms at relatively shallow depths, typically between 1 and 10 kilometers beneath the Earth's surface. This type of magma is formed through the partial melting of continental crust, which is composed mainly of granitic rocks.
When a mineral forms a definite shape a mineral has formed a?
It forms a crystal.
The melting of metamorphic or igneous rock forms what substance?
The melting of metamorphic or igneous rock forms magma.
Why does alkalic basalt contain less silica than tholeiites?
The magma that forms alkalic basalt forms under conditions with a higher fraction of partial melting that the magma that forms tholeiitic basalt. This means that the resulting alkalic melt contains a higher percentage of the minerals with a low silica content.
Why is ice in a glacier considered to be a mineral but but what forms a glacier is not?
Ice forms a glacier and therefore it is considered a mineral.
What can a mineral not be?
A mineral cannot be organic. A mineral cannot be made by or composed of life forms.
What is the name of the mineral that results when sodium chloride forms mineral crystals?
This mineral is called halite.
What is a common mineral that forms rocks?
Quartz is a common rock forming mineral.
What mineral forms glass?
The mineral quartz is the main ingredient in manufactured glass.
Which mineral commonly forms porphyroblasts?
Garnet commonly forms porphyroblasts.
What is a banded mineral?
A banded mineral is a mineral that has grains that are arranged in a particular pattern of flat layers or forms swirls.
