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

   en.wikipedia.org › wiki › Orthopyroxenite

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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.

2. agupubs.onlinelibrary.wiley.com › doi › fullPhase Transitions of Fe‐, Al‐ and Ca‐Bearing Orthopyroxenes ...

   agupubs.onlinelibrary.wiley.com › doi › full

   Jan 15, 2022 · Orthopyroxene ( (Mg, Fe, Ca) (Mg, Fe, Al) (Si, Al) 2 O 6) is a major rock-forming mineral in subducting slabs, and its metastable phases are considered to be related to the stagnation of slabs which are located at the transition zone due to its low density in comparison to other major slab minerals.

   • Cited By: 2
   • Volume: 127, Issue1

   • Published: 15 January 2022

3. pubs.geoscienceworld.org › msa › amminPhase diagram and thermal expansion of orthopyroxene ...

   pubs.geoscienceworld.org › msa › ammin

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   Jul 1, 2021 · Abstract. The MgGeO 3 system is a low-pressure analog for the Earth-forming (Mg,Fe)SiO 3 system and exhibits recoverable orthopyroxene, clinopyroxene, and ilmenite structures below 6 GPa.

   • Author: Simon A. Hunt, Simon A. Hunt, James R. Santangeli, David P. Dobson, Ian G. Wood

   • Publish Year: 2021

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

   www.britannica.com › science › orthopyroxene

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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.

   • Author: The Editors of Encyclopaedia Britannica

5. www.sciencedirect.com › orthopyroxeneOrthopyroxene - an overview | ScienceDirect Topics

   www.sciencedirect.com › orthopyroxene

   Orthopyroxenes and clinopyroxenes are highly magnesian with an Mg number ranging 0.89 to 0.96 (geometric mean: 0.92; standard deviation: 0.02) and 0.89 to 0.98 (geometric mean: 0.93; standard deviation: 0.02), respectively. Orthopyroxenes and clinopyroxenes have a high content of Al 2 O 3, at 3.13–5.30 wt.% and 1.79–6.45 wt.%, respectively.

6. People also ask

   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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   What is the formula for orthopyroxene?

   • Orthopyroxenes have a general formula (Mg, Fe, Ca) (Mg, Fe, Al) (Si, Al)2 O 6. The natural compositions are dominated by two major end-member components: enstatite (Mg 2 Si 2 O 6) and ferrosilite (Fe 2 Si 2 O 6 ).

   Orthopyroxene - an overview | ScienceDirect Topics

   www.sciencedirect.com/topics/earth-and-planetary-sciences/orthopyroxene

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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

   en.wikipedia.org/wiki/Orthopyroxenite

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   Does temperature affect the pressure-induced phase transition of orthopyroxene?

   • Previous studies suggested that the pressure-induced phase transition of orthopyroxene depends on the temperature. Orthopyroxene transforms into high- P clinopyroxene (hpcpx) at ∼7 GPa, and the pressure of this transition increases with increasing temperature (Akashi et al., 2009; Fei et al., 1990; Ito & Navrotsky, 1985; Ono et al., 2018 ).

   Phase Transitions of Fe‐, Al‐ and Ca‐Bearing Orthopyroxenes at High

   agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021JB023133

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7. www.sciencedirect.com › science › articleDetrital orthopyroxene as a tracer of geodynamic setting:: A ...

   www.sciencedirect.com › science › article

   May 5, 2022 · High-Mg orthopyroxene is exclusively derived from mantle rocks, whereas metagabbros of the lower continental crust and gabbroic rocks of arc crust are distinguished by their lower Ca.

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

   en.wikipedia.org › wiki › Pyroxene

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   The pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks.