1) Mineral
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https://www.crosswordclues.com/clue/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...
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http://en.wikipedia.org/wiki/Pyroxene
• (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90
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http://thinkexist.com/dictionary/meaning/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
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
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http://www.daviddarling.info/encyclopedia/P/pyroxene.html
<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...
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http://www.encyclo.co.uk/local/20973
a common mineral in igneous rocks, containing calcium, magnesium, iron, silicon, and oxygen.
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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...
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http://www.encyclo.co.uk/webster/P/205
A group of rock-forming silicate minerals composed of single chains of silicon-oxygen tetrahedra. Compare with amphibole, which is composed of double chains.
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http://www.evcforum.net/WebPages/Glossary_Geology.html
A group of single chained inosilicate minerals whose basic chemical unit is the silica tetrahedron (SiO
4). 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.
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http://www.physicalgeography.net/physgeoglos/p.html
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+...
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http://www.scientificpsychic.com/etc/geology-glossary.html
[
n] - any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
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http://www.webdictionary.co.uk/definition.php?query=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
Any one of a group of minerals, silicates of calcium, iron, and magnesium with a general formula
X,YSi
2O
6, found in igneous and metamorphic rocks. The internal structure is based on single chains of silicon and oxygen. Diopside (
X = Ca,
Y =...
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https://www.encyclo.co.uk/local/21221
any of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of rocks, esp. basic igneous rocks. Cf.
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https://www.infoplease.com/dictionary/pyroxene
No exact match found.
