pyroxene

a common mineral in igneous rocks, containing calcium, magnesium, iron, silicon, and oxygen.

pyroxene

[n] - any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
Found on http://www.webdictionary.co.uk/definition.php?query=pyroxene

Pyroxene

Pyr'ox·ene noun [ French pyroxène , from Greek ... fire + ... a stranger; -- so called because it was supposed to the be a stranger, or of rare occurrence, in igneous rocks,] (Min.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90°, and also in massiv...
Found on http://www.encyclo.co.uk/webster/P/205

pyroxene

<chemical> A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90 deg, and also in massive forms which are often laminated. It varies in colour from white to dark green and black, and includes many varieties differing in colour and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are a...
Found on http://www.encyclo.co.uk/local/20973

pyroxene

noun any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
Found on https://www.encyclo.co.uk/local/20974

Pyroxene

• (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90
Found on http://thinkexist.com/dictionary/meaning/pyroxene/

pyroxene

any of a group of important rock-forming silicate minerals of variable composition, among which calcium-, magnesium-, and iron-rich varieties ... [9 related articles]
Found on http://www.britannica.com/eb/a-z/p/138

Pyroxene

A group of single chained inosilicate minerals whose basic chemical unit is the silica tetrahedron (SiO4). They are common rock forming minerals and are found in most igneous and metamorphic rocks. They form at high temperatures with very little water in the crystallization environment.
Found on http://www.physicalgeography.net/physgeoglos/p.html

pyroxene

Any of a group of dark, dense, rock-forming silicate minerals rich in calcium, iron, and magnesium and commonly found in basalt. The group includes augite, hypersthene, and diopside, with composition varying as a mixture of FeSiO3, MgSiO3, and CaSiO
Found on http://www.daviddarling.info/encyclopedia/P/pyroxene.html

pyroxene

pyroxene (pī'roksēn) , name given to members of a group of widely distributed rock minerals called metasilicates in which magnesium, iron, and calcium, often with aluminum, sodium, lithium, manganese, or zinc occur as X in the chemical formula XSiO3. The pyroxene minerals crystallize...
Found on http://www.infoplease.com/ce6/sci/A0840651.html

pyroxene

Any one of a group of minerals, silicates of calcium, iron, and magnesium with a general formula X,YSi2O6, found in igneous and metamorphic rocks. The internal structure is based on single chains of silicon and oxygen. Diopside (X = Ca, Y =...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015294.html

Pyroxene

The pyroxenes are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. They share a common structure consisting of single chains of silica tetrahedra and they crystallize in the monoclinic and orthorhombic systems. Pyroxenes have the general formula XY(Si,Al)2O6 (where X represents calcium, sodium, ir...
Found on http://en.wikipedia.org/wiki/Pyroxene

pyroxene

Silicate compounds frequently found in volcanic lava with the general formula XYT2O6 where T represents the tetrahedrally coordinated cations silicon (Si+4) or aluminum (Al+3), X commonly represents magnesium (Mg+2), iron (Fe+2), manganese (Mn+2), calcium (Ca+2) or sodium (Na+), and Y commonly represents aluminum (Al+3), iron (Fe+3), titanium (Ti+4...
Found on http://www.scientificpsychic.com/etc/geology-glossary.html

Pyroxene

A group of rock-forming silicate minerals composed of single chains of silicon-oxygen tetrahedra. Compare with amphibole, which is composed of double chains.
Found on http://www.evcforum.net/WebPages/Glossary_Geology.html
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