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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. 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 ...

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

   agupubs.onlinelibrary.wiley.com › doi › full

   Jan 15, 2022 · Phase Transitions of Fe‐, Al‐ and Ca‐Bearing Orthopyroxenes at High Pressure and High Temperature: Implications for Metastable Orthopyroxenes in Stagnant Slabs - Xu - 2022 - Journal of Geophysical Research: Solid Earth - Wiley Online Library.

   • Cited By: 2
   • Volume: 127, Issue1

   • Published: 15 January 2022

4. pubs.geoscienceworld.org › msa › amminPressure-induced velocity softening in natural orthopyroxene ...

   pubs.geoscienceworld.org › msa › ammin

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   Aug 1, 2019 · Abstract. In this study, we have measured the compressional and shear wave velocities of (Mg 1.77 Fe 0.22 Ca 0.01 )Si 2 O 6 natural orthopyroxene up to 13.5 GPa and 873 K using ultrasonic interferometry in conjunction with in situ synchrotron X-ray diffraction and imaging techniques.

   • Author: Siheng Wang, Ting Chen, Nao Cai, Xintong Qi, Adrian Fiege, Robert C. Liebermann, Baosheng Li

   • Publish Year: 2019

5. www.nature.com › articles › s41561/019/0411-xArc magmas oxidized by water dissociation and ... - Nature

   www.nature.com › articles › s41561/019/0411-x

   Jul 29, 2019 · Published: 29 July 2019. Arc magmas oxidized by water dissociation and hydrogen incorporation in orthopyroxene. Peter Tollan & Jörg Hermann. Nature Geoscience 12 , 667–671 ( 2019) Cite this...

   • Author: Peter Tollan, Jörg Hermann

   • Publish Year: 2019

6. People also ask

   Can orthopyroxene be used as a reference material for in-situ microanalysis?

   • However, the applications have been hindered by the lag in the development of analytical techniques, such as shortage of reference materials. Orthopyroxene grains derived from an ultramafic intrusion at the Mogok metamorphic belt (Myanmar) were evaluated for the potential use of orthopyroxene as a reference material for in-situ microanalysis.

   Minerals | Free Full-Text | MK-1 Orthopyroxene—A New ... - MDPI

   www.mdpi.com/2075-163X/11/12/1321

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   Is orthopyroxene a phenocryst?

   • Orthopyroxene is the second most common phase in the upper mantle [ 1 ], and present as a phenocryst during crystallization of a wide range of melts, ranging from ultramafic boninite, to basalt, to andesite, rhyolite and granite [ 2, 3, 4 ]. Orthopyroxene is also an important cumulus phase in large layer intrusions [ 5] and ophiolites [ 6 ].

   Minerals | Free Full-Text | MK-1 Orthopyroxene—A New ... - MDPI

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   Is natural orthopyroxene a suitable reference material for in-situ mass fraction measurement?

   • 5. Conclusions The grains of natural orthopyroxene (MK-1) separated from an ultramafic intrusion at the Mogok metamorphic belt are sufficiently homogeneous and thus highly suitable as reference material for in-situ mass fraction measurement of orthopyroxene by EPMA, LA-ICPMS, and SIMS.

   Minerals | Free Full-Text | MK-1 Orthopyroxene—A New ... - MDPI

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   What are the phase transitions of San Carlos orthopyroxenes?

   • The phase transitions of natural San Carlos Fe-, Al- and Ca-bearing orthopyroxene and two synthetic orthopyroxenes containing Al (up to 12 wt. % Al 2 O 3) and Fe (up to 15 wt. % FeO) were investigated at high pressures and temperatures up to ∼30 GPa and 700 K using synchrotron-based single-crystal X-ray diffraction.

   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.mdpi.com › 2075-163X › 11/12/1321Minerals | Free Full-Text | MK-1 Orthopyroxene—A New ...

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   Nov 26, 2021 · Orthopyroxene, an important phase in mantle-derived rocks, has become a powerful tool to unravel mantle nature and magma processes. However, the applications have been hindered by the lag in the development of analytical techniques, such as shortage of reference materials. Orthopyroxene grains derived from an ultramafic intrusion at the Mogok metamorphic belt (Myanmar) were evaluated for the ...

8. 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. These minerals differ in the ratio of magnesium to iron in the crystal structure;