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orthopyroxene

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orthopyroxene [‚ȯr·thə·pə′räk‚sēn]
(mineralogy)
A series of pyroxene minerals crystallizing in the orthorhombic system; members include enstatite, bronzite, hypersthene, ferrohypersthene, eulite, and orthoferrosilite.
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The high contents of MgO (up to 30 wt%) coupled with low abundances of incompatible trace elements in komatiites suggest that the komatiitic magma was generated by a high degree of partial melting when Mg-rich olivine and orthopyroxene were dominant phases entering the melts.
Igneous rock associations 10. Komatiites by Dostal, Jaroslav / Geoscience Canada
8] Magnetite 50,000 Ilimenite 100 Hematite 60-600 Pyrrhotite 10-1000 Orthopyroxene 50 Biotite 80 TABLE 3.
Distribution of Magnetic sands on Lake Michigan beaches near ... by Kean, William F. / Michigan Academician
Two other minor assemblages occur in distinct areas of the body: a chromite prospect consisting of massive and banded chromite deposits, and an area consisting of 5-10% orthopyroxene.
Metabolism of Dark Ridge Dunite, North Carolina. (South Carolina ... by Hepler, Christopher W.; Warner, Richard D. / Bulletin of the South Carolina Academy of Science
 
 
 
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