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1. en.wikipedia.org › wiki › PyroxenePyroxene - Wikipedia

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   Pyroxene. Pyroxene ( diopside) crystals from Afghanistan. The pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the general formula XY (Si,Al)2O6, where X represents calcium (Ca), sodium (Na), iron (Fe (II)) or magnesium (Mg) and more rarely ...

2. www.britannica.com › science › orthopyroxeneOrthopyroxene | Silicate, Igneous, Olivine | Britannica

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   orthopyroxene, any of a series of common silicate minerals in the pyroxene family. Orthopyroxenes typically occur as fibrous or lamellar (thin-plated) green masses in igneous and metamorphic rocks and in meteorites. These minerals differ in the ratio of magnesium to iron in the crystal structure; their composition ranges from pure magnesium ...

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   What is orthopyroxene?

   • orthopyroxene, any of a series of common silicate minerals in the pyroxene family. Orthopyroxenes typically occur as fibrous or lamellar (thin-plated) green masses in igneous and metamorphic rocks and in meteorites.

   Orthopyroxene | Silicate, Igneous, Olivine | Britannica

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   What type of mineral is orthopyroxene?

   • Orthopyroxene, any of a series of common silicate minerals in the pyroxene family. Orthopyroxenes typically occur as fibrous or lamellar (thin-plated) green masses in igneous and metamorphic rocks and in meteorites. These minerals differ in the ratio of magnesium to iron in the crystal structure;

   Orthopyroxene | Silicate, Igneous, Olivine | Britannica

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   Which igneous rocks contain orthopyroxene?

   • Thin irregular and wavy lamellae common. Orthopyroxene high in Mg is common in gabbro and peridotite groups. Fe-rich orthopyroxene is typically found in diorite, syenite and granite. With Ca-clinopyroxene, plagioclase and olivine in mafic and ultramafic igneous rocks. Feldspars, clinopyroxene, garnet, biotite and hornblende.

   Orthopyroxene Page - Clark Science Center

   www.science.smith.edu/geosciences/petrology/petrography/orthopyroxene/opx.html

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   What is an example of an orthopyroxenite?

   • Language links are at the top of the page across from the title. ALH 84001 is an extraterrestrial example of an orthopyroxenite. It is an achondrite meteorite from Mars. Orthopyroxenite is an ultramafic and ultrabasic rock that is almost exclusively made from the mineral orthopyroxene, the orthorhombic version of pyroxene and a type of pyroxenite.

   Orthopyroxenite - Wikipedia

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4. en.wikipedia.org › wiki › OrthopyroxeniteOrthopyroxenite - Wikipedia

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   Orthopyroxenite is an ultramafic and ultrabasic rock that is almost exclusively made from the mineral orthopyroxene, the orthorhombic version of pyroxene and a type of pyroxenite. It can have up to a few percent of olivine and clinopyroxene . This ternary diagram shows the orthopyroxenites as a function of olivine, clinopyroxene and ...

5. home.wgnhs.wisc.edu › minerals › orthopyroxeneOrthopyroxene – WGNHS – UW–Madison

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   Orthopyroxenes are a group of minerals ranging from pure MgSiO3 (enstatite) to pure FeSiO3 (ferrosilite). Bronzite and hypersthene are orthopyroxenes mid-way between these two end members. As the particular orthopyroxene mineral described is not always identified, all reported orthopyroxene occurrences are grouped together. Orthopyroxenes are relatively widespread as a primary mineral in ...

6. www.mindat.org › min-33223Orthopyroxene: Mineral information, data and localities.

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   82fde655-7222-4c21-8eb6-d992ac0a87b7 (as Orthopyroxene) e7ab19ec-462b-48f9-95b8-64a65121413c (as Orthopyroxene Subgroup) References for OrthopyroxeneHide

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8. www.science.smith.edu › orthopyroxene › opxOrthopyroxene Page - Clark Science Center

   www.science.smith.edu › orthopyroxene › opx

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   Orthopyroxene high in Mg is common in gabbro and peridotite groups. Fe-rich orthopyroxene is typically found in diorite, syenite and granite. With Ca-clinopyroxene, plagioclase and olivine in mafic and ultramafic igneous rocks. Associated Minerals. Feldspars, clinopyroxene, garnet, biotite and hornblende. Editors.

9. www.britannica.com › science › pyroxenePyroxene | Mineral Composition, Structure & Uses | Britannica

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   The chemical composition of minerals of the pyroxene group can be expressed by the general formula XYZ 2 O 6, in which X= Na +, Ca 2+, Mn 2+, Fe 2+, Mg 2+, Li +; Y= Mn 2+, Fe 2+, Mg 2+, Fe 3+, Al 3+, Cr 3+, Ti 4+; and Z= Si 4+, Al 3+. The range of possible chemical substitutions in pyroxene is constrained by the sizes of the available sites in ...