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Basaltic Composition are Igneous rocks composed mostly of dark silicate minerals and plagioclase feldspar. Rich in elements of magnesium and iron. It is also known as mafic.

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What is the composition that contain many dark silicate minerals and that also are rich in magnesium and iron?

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How would the color and density of rock composed mostly of non-ferro magnesium silicate minerals differ from one made up mostly of ferro-magnesium silicate?

non-ferro magnesium silicate dominated rock would be lighter in color and less dense than ferro-magnesium silicate dominated rock. NOTE: The color of olive-green belong to the ferro-magnesium silicate dominated rock group.


Igneous rocks that contain many dark silicate minerals and that also are rich in magnesium and iron have a composition that is .?

Igneous rocks that are rich in dark silicate minerals and contain high levels of magnesium and iron are classified as mafic rocks. These rocks typically include basalt and gabbro, characterized by their darker color and denser composition. The term "mafic" is derived from the minerals magnesium and ferric iron, which are predominant in these types of rocks.


What is the grouping of silicate and non-silicate minerals based on?

The grouping of silicate and non-silicate minerals is based on whether they contain silicon and oxygen. Silicate minerals are divided into smaller groups based on their structure. Non-silicate minerals are didvided into smaller groups based on their composition.


What are Igneous rocks that contain many dark silicate minerals and that also are rich in magnesium and iron have a composition that is?

Igneous rocks that contain many dark silicate minerals and are rich in magnesium and iron have a mafic composition. These rocks typically include basalt and gabbro, which are characterized by their higher density and darker color compared to felsic rocks. The presence of minerals such as olivine, pyroxene, and amphibole contributes to their mafic nature.


what are the 2 minerals present in mantle of the earth?

The two primary minerals found in the Earth's mantle are olivine and pyroxene. Olivine is a magnesium iron silicate, while pyroxene is a group of silicate minerals containing varying amounts of iron, magnesium, and calcium. These minerals are crucial in understanding the mantle's composition and behavior, as they play a significant role in the mantle's physical properties and dynamics.


What are femic minerals?

Ferro-magnesian silicate minerals ie containing iron and magnesium


What type of composition does an igneuous rock have that contains mostly plagiclase feldspar and about 30 percent dark silicate minerals?

it is ultra mafic


Do all silicate minerals contain iron?

silicon, oxygen, iron and magnesium


What are the chemical compositions of the mantle?

The Earth's mantle primarily consists of silicate minerals rich in magnesium and iron, such as olivine, pyroxene, and garnet. Its chemical composition is dominated by compounds like magnesium silicate (Mg2SiO4) and iron silicate (Fe2SiO4), alongside other elements such as aluminum, calcium, and sodium. The mantle's overall composition reflects a gradient of increasing density and temperature with depth, impacting its physical properties and behavior.


Most silicate minerals form from?

Most silicate minerals form from the crystallization of magma or lava as it cools, allowing silicate ions (SiO₄) to combine with metal cations like aluminum, iron, magnesium, and calcium. They can also form through processes such as metamorphism, where existing rocks are subjected to heat and pressure, or through weathering, where silicate minerals break down and recombine in sedimentary environments. Silicate minerals are the most abundant group of minerals in the Earth's crust, primarily due to the prevalence of silicon and oxygen in the Earth's composition.


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

No, the mantle is composed primarily of solid silicate minerals rich in magnesium and iron, with smaller amounts of other elements like aluminum, calcium, and sodium. The metallic component is mainly found in the Earth's core, while the mantle is predominantly rocky in composition.