pyroxene

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py·rox·ene

 (pī-rŏk′sēn′)
n.
Any of a group of crystalline silicate minerals common in igneous and metamorphic rocks and containing two metallic oxides, as of magnesium, iron, calcium, sodium, or aluminum.

[French pyroxène : Greek puro-, pyro- + Greek xenos, stranger (originally viewed as a foreign substance when found in igneous rocks); see ghos-ti- in Indo-European roots.]

py′rox·en′ic (pī′rŏk-sē′nĭk, -sĕn′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pyroxene

(paɪˈrɒksiːn)
n
(Minerals) any of a group of silicate minerals having the general formula ABSi2O6, where A is usually calcium, sodium, magnesium, or iron, and B is usually magnesium, iron, chromium, manganese, or aluminium. Pyroxenes occur in basic igneous rocks and some metamorphic rocks, and have colours ranging from white to dark green or black. They may be monoclinic (clinopyroxenes) or orthorhombic (orthopyroxenes) in crystal structure. Examples are augite (the most important pyroxene), diopside, enstatite, hypersthene, and jadeite
[C19: pyro- + -xene from Greek xenos foreign, because it was mistakenly thought to have originated elsewhere when found in igneous rocks]
pyroxenic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

py•rox•ene

(paɪˈrɒk sin, pə-, ˈpaɪ rɒkˌsin)

n.
any of a group of silicate minerals whose silica tetrahedra are arranged in single chains, usu. with ions of magnesium, iron, and calcium in between, and that constitute many igneous rocks.
[1790–1800; < French; see pyro-, xeno-; orig. conjectured to be a foreign substance when found in igneous rocks]
py`rox•en′ic (-ˈsɛn ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

py·rox·ene

(pī-rŏk′sēn′)
Any of a series of rock-forming minerals consisting of mixtures of calcium, sodium, magnesium, or iron silicates. Pyroxenes vary in color from white to dark green or black and are characterized by a rectangular-shaped cross section. They occur in igneous and metamorphic rocks.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pyroxene

Any of a group of rock-forming silicate minerals.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyroxene - any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
nephelinite - an igneous rock consisting of nepheline and pyroxene
basalt - the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
References in periodicals archive ?
Optical microscopy detected many other minerals among the heavy minerals of the Lemme samples, the contents of which remained near the detection limit of the XRD method (pyroxenes, epidotes, micas, tourmaline and apatite) or considerably lower (pyrite, barite, staurolite, kyanite, monazite and titanite).
In two of the five particles, the team identified the mineral pyroxene. In terrestrial samples, pyroxenes have water in their crystal structure.
[USPRwire, Tue Oct 09 2018] Pyroxenite is an ultrabasic rock that consists of minerals that belong to the pyroxenes group-- predominantly, ferromagnesian minerals other than olivine.
Sulfur incrustations also contain scattered crystals of rock-forming minerals (i.e., pyroxenes, plagioclase, and magnetite) and felsic glass.
It mainly consists of anorthose, hornblende, potassium feldspar, biotite, quartz and a few monoclinic pyroxenes and metallic minerals.
As is the case of Riesling, or to a lesser part Viogner, with their abundant levels of pyroxenes, multiple personalities co-exist to successful levels in a glass.
The first exhibit balls (tephra balls) composed of a mixture of glassy porphyritic basalt fragments, crystal fragments of olivine, pyroxenes and zeolitized plagioclase admixed with organic matter, set in a groundmass of finer calcareous muddy material with crystal fragments, clays, analcime, calcite and organic matter.
In the M3 imaging of Copernicus, the new feature appeared as an area that reflects less light at wavelengths around 900 and 2,000 nanometers, an indicator of minerals rich in magnesium pyroxenes. In the rest of the crater floor, there was a dominant dip beyond 950 nm and 2400 nm, indicating minerals rich in iron and calcium pyroxenes.
But when they analyzed minerals called pyroxenes, they found that the ratio of iron to manganese did match those of other Martian meteorites.
But when they analysed minerals called pyroxenes, they found that the ratio of iron to manganese did match those of other Martian meteorites.
Phenocrysts are represented by plagioclases (18 %), pyroxenes (4 %) and amphiboles (3 %).
According to [72], the relatively low [[sigma].sup.18]O in the pyroxenes reflects metasomatism by a silicate melt from subducted altered oceanic crust.