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

Pyroxenes are the most significant and abundant group of rock-forming ferromagnesian silicates. They are found in almost every variety of igneous rock and also occur in rocks of widely different compositions formed under conditions of regional and contact metamorphism.

2023年4月23日 · Pyroxene is a set of essential rock-forming inosilicate minerals discovered in many igneous and metamorphic rocks. Formula is XY(Si,Al)2O6.

Pyroxene is the name of a group of dark-colored rock-forming minerals found in igneous and metamorphic rocks throughout the world. They form under conditions of high temperature and/or high pressure. Augite, diopside, jadeite and spodumene are four of the best-known members of the pyroxene group; however, the pyroxene group has many other members.

Pyroxene was originally what might now be called "augite", but the name has been raised as a group name of structurally and chemically similar minerals. A large group of inosilicate (chain silicate) minerals with the general formula ADSi 2 O 6. It is divided into the Clinopyroxene Subgroup (monoclinic) and the Orthopyroxene Subgroup (orthorhombic).

Pyroxene minerals are significant components of many intermediate, and most mafic, igneous rocks. They also occur in many medium-to-high grade metamorphic rocks. Only one pyroxene mineral, a sodium-rich pyroxene called Spodumene, occurs in felsic igneous rocks. Description and Identifying Characteristics

Pyroxenes are classified as ferromagnesian minerals in allusion to their high content of magnesium and iron. Their conditions of formation are almost exclusively restricted to environments of high temperature, high pressure, or both.

Pyroxenes are the most significant and abundant group of rock-forming ferromagnesian silicates. They are found in almost every variety of igneous rock and occur in rocks of widely different compositions formed under conditions of regional and contact metamorphism.

Pyroxenes are a group of chain silicates that occur as fundamental Mg, Fe, Ca, and Na-bearing minerals in many igneous and metamorphic rocks.

2022年12月16日 · Pyroxenes contain many different elements, but all pyroxenes have the general formula shown in the blue box. The most common pyroxenes are close to Ca (Mg,Fe)Si 2 O 6 or (Mg,Fe) 2 Si 2 O 6 in composition. So, we can describe the chemistries of most pyroxenes in terms of the five end members listed in the box.