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A peridotite is a dense, coarse-grained igneous rock, consisting mostly of the minerals olivine and pyroxene. Peridotite is ultramafic, as the rock contains less than 45% silica.

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Q: Peridotite is composed almost entirely of dark silicate minerals.?
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Peridotite which is composed almost entirely of dark silicate minerals and is believed to make up much of Earth and upper mantle has a composition that is .?

ultramaficur welcome 🥴


Peridotite which is composed almost entirely of dark silicate minerals and is believed to make up much of Earth and upper mantle has a composition that is?

ultramaficur welcome 🥴


Peridotite which is composed almost entirely of dark silicate minerals and is believed to make up much of earth's upper mantle has a composition that is?

ultramaficur welcome 🥴


Do non silicate minerals contain silicon?

Most likely not. Silicate minerals contain silicon in combination with oxygen. However, silicon itself is considered a non-silicate mineral, composed entirely of the element silicon; without the oxygen, however, it IS a non-silicate mineral.


What are chief elements in igneous rock?

Igneous rocks are composed mainly of silicate minerals. Granite is mostly quartz, feldspar and mica. Basalt is mainly feldspar, pyroxine and amphibole. Diorite can be a mixture of all of these minerals. Peridotite is mainly olivine (peridot) and pyroxine.


What do silicate minerals contain?

They all contain the silicon-oxygen tetrahedron.


It is generally true that igneous rocks are composed of what type of mineral?

igneous rocks are composed of silicate minerals


What type of rock is peridotite?

Peridotite is an ultramafic rock (less than 45% silica) and mainly contains the minerals olivene (a magnesium iron silicate - (Mg,Fe)2SiO4) and pyroxene (XY(Si,Al)2O6 where x may be calcium, sodium, iron or magnesium) and so as can be seen from the chemistry of the two primary minerals contains significant amounts of magnesium and iron.


What is the percentage of the earths crust made up of non silicate minerals?

Only 10% of the Earth's crust is composed of non-silicate minerals. Examples of non-silicate minerals are barringerite, nickel phosphide, taenite and suessite.


Is chalcedony silicate or nonsilicate?

Chalcedony is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silicate minerals.


Is the mantle is composed mainly of metallic iron with small amounts of magnesium silicate minerals?

Yeah


What are the features of two major groups of minerals?

silicate minerals and non silicate minerals