Pyroxenes have a single chain structure, while amphiboles have a double chain structure. Pyroxenes typically have a simpler, more elongated crystal structure compared to the more complex, ribbony structure of amphiboles. Additionally, pyroxenes commonly have a monoclinic or orthorhombic crystal system, while amphiboles have a monoclinic system.

Astenosphere contain pyroxenes and olivines.

Pyroxenes have a single-chain structure composed of silica tetrahedral chains linked to metal cations, typically magnesium and iron, in octahedral coordination. This structure gives pyroxenes their characteristic two-directional cleavage.

pyroxenes

yes it is made up of olivine and various pyroxenes

Mostly the Moon's solid mantle comprises olivene and pyroxenes.

Amphiboles have a more complex structure than pyroxenes because they contain additional layers of oxygen and hydroxyl groups. This leads to a greater variety of chemical compositions and structural arrangements within amphiboles compared to pyroxenes. Additionally, amphiboles often exhibit more pronounced cleavage planes and a wider range of physical properties due to their more intricate structure.

Quartz and the Feldspar are very common.

Other common silicates would be the mica group, even pyroxenes and the amphiboles.

inside a shield volcano is a hot surface of mamga

The rocks found in the mantle are usually olivine, pyroxenes, spinal structure minerals, and garnet. Some others are peridotite, dunite, and eclogite.

Yes, calcium is found in most lavas, especially those with a low silica content. When the lava cools, the calcium goes into minerals such as plagioclase and pyroxenes.

Peridotite is mainly composed of olivine, along with pyroxenes and minor amounts of other minerals like spinel and garnet. These minerals give peridotite its characteristic green color.

The Earth's mantle is approximately 2,900 kilometers (1,800 miles) thick. It is primarily composed of silicate minerals rich in magnesium and iron, including olivine, pyroxenes, and garnet.

A silicate mineral that shares it's oxygen atom with another silica tetrahedron, forming a chain of tetrahedra. Single chain silicates include a group called the pyroxenes.

A pyroxene is a group of rock-forming inosilicate minerals commonly found in igneous and metamorphic rocks. They typically have a chain-like structure and are composed of silicate tetrahedra. Pyroxenes are important constituents of Earth's mantle and crust.

The moon is primarily made of rock and metal, with a surface composition that includes minerals like feldspar, pyroxenes, and olivine. It lacks a significant atmosphere and is mostly composed of silicate rocks.

Examples of ferromagnesian silicate minerals include olivine, pyroxenes (such as augite), amphiboles (such as hornblende), and biotite mica. These minerals contain iron and magnesium in their crystal structures, which contribute to their dark color and magnetic properties.

The dominant rock type of the upper mantle is peridotite.

3.20 (Enstatite) to 3.28 (Diopside) to 3.50 (Hedenbergite) to 3.88 (Ferrosilite). That pretty much covers the Ca-Mg-Fe pyroxenes.

There are many sorts of igneous rocks. Granite is made of quarts, feldspar, and mica, while basalts are made of less than 20% quartz and less than 10% feldspar and the rest made up of pyroxenes and olivine.

the five most common rock-forming minerals are

-quartz

-feldspars

-micas

-amphiboles

-pyroxenes

most likely Mg rich pyroxenen since Fe starts melting earlier from a melt and also mantle rocks that are highly melt depleted contain very high mg rich pyroxenes

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The igneous rock with mostly pyroxenes and olivine is likely a mafic rock, such as basalt or gabbro. These minerals are common in mafic rocks due to their high iron and magnesium content. Mafic rocks are associated with oceanic crust and volcanic activity.

The upper mantle is typically a greenish-brown color due to the presence of minerals like olivine and pyroxenes. However, the upper mantle is located below the Earth's crust and is not directly visible, so its color is based on scientific observations and studies rather than direct observation.

The upper mantle is very close in chemical and mineralogical composition to the lower mantle, as both layers are primarily composed of silicate minerals such as olivine, pyroxenes, and garnet. These minerals make up the majority of the Earth's mantle and are responsible for its solid but flowing behavior.

Soapstone is an intrusive rock, primarily composed of talc, chlorite, pyroxenes, micas, carbonates, and amphiboles. It forms from the metamorphism of ultramafic rocks, typically at high pressures and temperatures beneath the Earth's surface. Its formation occurs slowly, allowing for the growth of larger crystal structures, which is characteristic of intrusive rocks.

The lunar surface is primarily made of igneous rocks, such as basalt and anorthosite. It also contains regolith, which is a layer of loose rock, dust, and soil created by the impact of meteorites and micrometeorites. Additionally, there are deposits of minerals like ilmenite and pyroxenes.

Soapstone is a metamorphic rock composed primarily of talc with varying amounts of chlorite, pyroxenes, micas, carbonates, and amphiboles. It is known for its softness, smooth texture, and high heat resistance, making it popular for use in countertops, sinks, and carvings.

Moon rocks are primarily composed of basalt, a volcanic rock rich in iron and magnesium. They also contain minerals such as plagioclase feldspar, pyroxenes, and olivine. Additionally, moon rocks may contain glass beads formed from melted rock during meteorite impacts on the surface.

The six main types of crystalline structures in silicate materials are framework silicates (e.g., quartz), sheet silicates (e.g., muscovite), chain silicates (e.g., pyroxenes), single tetrahedra (e.g., olivine), double tetrahedra (e.g., garnet), and ring silicates (e.g., beryl).

Yes, olivine is a key mineral in peridotites and other ultramafic rocks, typically making up a substantial portion of their composition. It is a primary mineral in these rocks, alongside other minerals like pyroxenes and chromite. Olivine's presence helps characterize these rocks and plays a role in their formation and geologic processes.

When two single chains of tetrahedra bond to each other, the resulting structure is called a double chain silicate. These structures typically involve each tetrahedron sharing three oxygen atoms with adjacent tetrahedra, forming a linked double chain. Examples include amphiboles and pyroxenes.

The middle mantle is composed mainly of silicate minerals such as olivine, pyroxenes, and garnet. These minerals are dense and can withstand high pressure and temperature conditions found at this depth within the Earth. The middle mantle makes up a significant portion of the Earth's interior and plays a crucial role in the planet's internal dynamics.

About 200 minerals make up the bulk of most rocks. The feldspar mineral family is the most abundant. Quartz, calcite, and clay minerals are also common. Some minerals are more common in igneous rock (formed under extreme heat and pressure), such as olivine, feldspars, pyroxenes, and micas.

Basaltic lava is far less viscous, has less silica, erupts at a higher temperature and is denser than granitic lava (properly called rhyolitic lava when it is on the surface). Basaltic lava is composed primarily of pyroxenes and calcium rich plagioclase with small amounts of olivine. Rhyolitic lava primarily contains alkali feldspars and quartz.

Phobos is primarily composed of carbon-rich rock and regolith (loose, fragmented material). It also contains minerals such as pyroxenes and olivines. In addition, traces of water ice and organic molecules have been detected on its surface.

The five types of silicate structures are:

1. Nesosilicates: Isolated tetrahedra, such as olivine.
2. Sorosilicates: Pair of tetrahedra sharing one oxygen atom, like epidote.
3. Cyclosilicates: Tetrahedra arranged in rings, exemplified by beryl.
4. Inosilicates: Tetrahedra linked in single or double chains, as seen in pyroxenes and amphiboles.
5. Phyllosilicates: Tetrahedra forming sheets, with examples including mica and talc.

Samples of the mineral pyroxene typically exhibit a prismatic or elongated crystal habit, often showing distinct cleavage planes at approximately 87 and 93 degrees. They are usually dark-colored, ranging from green to black, and can display a glassy to dull luster. Pyroxenes are also known for their high hardness and are commonly found in igneous and metamorphic rocks.

The chemical formula for soapstone is primarily composed of talc, with a composition of (Mg,Fe)3Si4O10(OH)2. It also contains varying amounts of other minerals such as chlorite, pyroxenes, micas, and carbonates.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern PY--XE---. That is, nine letter words with 1st letter P and 2nd letter Y and 5th letter X and 6th letter E. In alphabetical order, they are:

pyroxenes

pyroxenic

One of the common rocks found in the upper mantle is peridotite, which is primarily composed of olivine along with pyroxenes and other minerals. This rock is ultramafic, meaning it has a high magnesium and iron content, and it plays a crucial role in the composition of the Earth's mantle. Peridotite is also believed to be the source rock for basalt, which forms when it partially melts. Its presence helps scientists understand mantle processes and the dynamics of plate tectonics.

The Earth's mantle is primarily composed of silicate minerals rich in magnesium and iron. The dominant mineral types include olivine, pyroxenes, and garnet, with olivine being the most abundant at the upper mantle. The mantle also contains other minerals like peridotite and eclogite, which can form under high-pressure conditions. Overall, these minerals contribute to the mantle's properties, including its ability to flow slowly over geological time.

Peridotite and dunite are examples of ultramafic igneous rocks primarily composed of the mineral olivine. Peridotite typically contains a mix of olivine, pyroxenes, and possibly other minerals, while dunite is almost entirely made up of olivine. These rocks are commonly found in the Earth's mantle and are significant in understanding tectonic processes and the composition of the Earth's interior. Their formation is associated with high-temperature and high-pressure conditions beneath the Earth's surface.

Mafic minerals are silicate minerals that are rich in magnesium and iron, which gives them a darker color and higher density compared to felsic minerals. The primary mineral group considered mafic includes pyroxenes, amphiboles, olivine, and biotite. Common examples of mafic minerals are augite and hornblende. These minerals are typically found in basalt and other igneous rocks formed from magma with a higher iron and magnesium content.

Talc is formed from the metamorphism of magnesium-rich minerals such as serpentine, pyroxenes, and amphiboles. The heat and pressure from geological processes cause these minerals to undergo chemical changes, transforming them into talc. Over time, the talc can accumulate into deposits that are mined for various industrial applications.

I can tell you the composition:

Oxygen

Silicon

Magnesium

Iron

Aluminium

Calcium

Sodium

Potassium

Silicon Dioxide

Magnesium Oxide

Wustite (don't Ask!)

Aluminium Oxide

Calcium Oxide

Sodium Oxide

Potassium Oxide

Samples of the mineral pyroxene typically exhibit a distinctive prismatic crystal habit, often forming elongated, stubby crystals. They usually display a vitreous luster and can be found in a range of colors, including green, brown, and black. Pyroxenes also exhibit two cleavages at nearly 90-degree angles, which is a key identifying feature. Additionally, they have a high density and are generally hard, with a Mohs hardness of around 5 to 7.

Before it became a metamorphic rock, soapstone originated as talc-rich sedimentary rock. Over time, geological processes such as heat and pressure transformed it into the metamorphic rock we recognize today. Soapstone is primarily composed of talc, along with chlorite, pyroxenes, micas, carbonates, amphiboles, and other minerals, giving it a soft texture and unique properties. It has been used for centuries for carving, cookware, and countertops due to its heat resistance and workability.