clinopyroxene


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clinopyroxene

[¦klī·nə·pə′räk‚sēn]
(mineralogy)
The general term for any of those pyroxenes that crystallize in the monoclinic system; on occasion, these pyroxenes have large amounts of calcium with or without aluminum and the alkalies. Also known as monopyroxene clinoaugite.
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We have determined in situ concentrations of 28 trace elements (REE, Ba, Rb, Sr, Th, U, Nb, Ta, Pb, Zr, Hf, Y, Sc, V, Co and Cr) in olivine, plagioclase, orthopyroxene, clinopyroxene, amphibole and phlogopite on two polished thick sections (130 [micro]m) by laser ablation ICP-MS at the Natural History Museum of London, using a New Wave UP193FX gas laser source operating at 193 nm coupled to an Agilent 7500CS ICP-MS.
Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas
The pillow lavas have microvesicles that are filled with chlorite; carbonate and opaque minerals that located in a groundmass of plagioclase and clinopyroxene microlites.
Economic geology, petrogeraphy and geochemical dispersion of volcanic rocks in Noorabad ophiolite (Northwest Lorestan, West Iran)
Phenocrysts: Ol: olivine, Opx: orthopyroxene, Cpx: clinopyroxene, Pig: plagioclase, Qtz: quartz, and Amp: amphibole.
Multivariate analysis, mass balance techniques, and statistical tests as tools in igneous petrology: application to the Sierra de las Cruces Volcanic Range (Mexican Volcanic Belt)
In the A-B diagram of [31], the samples show a negative slope in IV sectors of metaaluminous area that is such a trend characteristic of cafemic (CAFEM) rocks due to presence of hornblende, ortho- and clinopyroxene, biotite, epidote, and titanite in origin (Figure 9(a)).
Geochemistry, paragenesis, and wall-rock alteration of the qatruyeh iron deposits, southwest of Iran: implications for a hydrothermal-metasomatic genetic model
5a), which could be explained by -20% clinopyroxene fractionation from other West Valley magmas but at pressures much higher than would be expected for an incipient rift in thin crust (Cousens et al.
Igneous Rock Associations 11. The geology and petrology of seafloor volcanic rocks of the northeastern Pacific Ocean, Offshore Canada
Mafic minerals (biotite and hastingsitic hornblende with rare clinopyroxene inclusions) account for up to 10 vol% of the rock.
Anorogenic magmatic rocks in the Estonian crystalline basement/Eesti kristalse aluskorra anorogeensed magmakivimid
Andesine to oligoclase ([An.sub.27-30]) predominate over sodic sanidine and scarce clinopyroxene and titanomagnetite in the matrix of fresh trachyandesite facies.
Zeolite-bearing trachyandesite from Dobranka, Ceske stredohori Mts.: petrography, geochemistry and amygdale mineralogy
The flow is a coarse-grained, ophitic basalt containing heavily altered plagioclase and relatively unaltered clinopyroxene. Cornwall identified these amygduole string patterns as pegmatite layers.
Geological Sciences
In contrast, the moon's surface appears to have roughly equal mixtures of these two minerals and one other, clinopyroxene.
Ida's moon: not a chip off the old block
Eclogites mainly consist of garnet, omphacitic clinopyroxene and symplectite with minor rutile and epidote group minerals (including zoisite, clinozoisite and epidote).
PETROGRAPHIC STUDY OF METAMORPHOSED PANJAL TRAPS FROM THE KAGHAN VALLEY, NORTH PAKISTAN
Blundy, "A predictive model for rare earth element partitioning between clinopyroxene and anhydrous silicate melt," Contributions to Mineralogy and Petrology, vol.
Rare Earth Elements in Mineral Deposits: Speciation in Hydrothermal Fluids and Partitioning in Calcite

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