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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.
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.
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.
23 kwi 2023 · Pyroxene is a set of essential rock-forming inosilicate minerals discovered in many igneous and metamorphic rocks. Formula is XY(Si,Al)2O6.
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.
Pyroxenes are single-chain silicates with the general formula XYSi2 O 6, where X and Y are either both divalent cations (mainly Ca, Fe, Mg), or mono- (Na, Li) and trivalent cations (Al, Fe) respectively.
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). The most recent nomenclature is given by Morimoto et al. (1988).
