Pyroxenes that crystallize in the monoclinic system are known as clinopyroxenes and those that crystallize in the orthorhombic system are known as orthopyroxenes. The name pyroxene is derived from the Ancient Greek words for 'fire' (πυρ, pur) and 'stranger' (ξένος, xénos).

2024年6月10日 · 在地球科学领域，准确区分斜方辉石（Orthopyroxene，Opx）和单斜辉石（Clinopyroxene，Cpx）不仅是岩石学和矿物学研究的基础，还对理解地球内部的成岩过程、地幔动力学以及岩石圈演化具有重要意义。

斜方辉石（orthorhombic pyroxene）是指辉石族中的一个矿物系列，又称正辉石，系斜方晶系辉石的总称，全由顽辉石 (En)与铁辉石 (Fs)组成的类质同像系列。 斜方辉石并不是一种矿物，而是一个矿物系列。 又称正辉石，系斜方晶系辉石的总称，主要为顽火辉石（En）-斜方铁辉石（Fs）类质同像系列。 它还包括 顽火辉石 、 古铜辉石 、 紫苏辉石 、铁紫苏辉石、 尤莱辉石 和 铁辉石 等 …

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 is in many ways similar to clinopyroxene. The keys to identifying orthopyroxene are its relief, usually pale green (sometimes pleochroic to pink) color, low-order interference colors, and near 90 o cleavage seen in some views.

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.

A subgroup name for orthorhombic Pyroxene Group minerals. Compare Clinopyroxene Subgroup. The most common member in rocks is enstatite. As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams. Please only use the official IMA–CNMNC symbol.

Igneous and metamorphic rocks under the microscope: classification, textures, microstructures and mineral preferred-orientations. • Vernon, R. H. & Clarke, G. L. (2008): Principles of Metamorphic Petrology. Cambridge University Press. Orthopyroxene crystal in a dacite. XPL image , 10x (Field of view = 2mm) Orthopyroxene crystal in a dacite.

Orthopyroxene is the most characteristic and important ferromagnesian mineral of the rocks of the charnockite series and is a typical mineral of the granulite facies of regional metamorphism. It is also produced in medium-grade, thermally metamorphosed, …

Metamorphic mafic rocks that contain orthopyroxene (Opx) and plagioclase belong to the granulite facies. Orthopyroxene is a mixture of enstatite and ferrosilite components and is also called hypersthene. It is dark with a brownish tint in hand specimen and colourless to …