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Mafic slab melt contributions to Proterozoic massif-type anorthosites. [PDF]
Sci AdvKeller DS +6 more
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Characterization, Source Analysis, and Ecological Risk Assessment of Heavy Metal Pollution in Surface Soils from the Central-Western Ali Region on the Tibetan Plateau. [PDF]
ToxicsHuang Y, He T, Luo J, Ma X, Zhang T.
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Experimental evidence of phase transition of silica polymorphs in basaltic eucrites: implications for thermal history of protoplanetary crust. [PDF]
Sci RepKanemaru R +8 more
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Carbonate- and silicate-metasomatized mantle beneath Himalayan-Tibetan orogenic belt. [PDF]
Commun Earth EnvironLi W, Yang Z, Zajacz Z, Zhou L, Hou Z.
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Model pyroxenes I: Ideal pyroxene topologies
American Mineralogist, 2003Ideal pyroxenes are hypothetical structures based on ideal closest-packed arrangements of O anions. They are modeled after observed pyroxene structures and have the general formula M2M1T2O6, where M2 and M1 represent octahedrally coordinated cations, and T represents tetrahedrally coordinated cations.
Richard M. Thompson, Robert T. Downs
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Geochimica et Cosmochimica Acta, 1979
A thermodynamic analysis of pyroxene-melt equilibria is performed through use of a literature survey of analyses of high-Ca pyroxene and coexisting silicate melt pairs and analyses of low-Ca pyroxene silicate melt pairs. Reference is made to a modified version of a model developed by Bottinga and Weill (1972) which more successfully accounts for ...
Roger L. Nielsen, Michael J. Drake
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A thermodynamic analysis of pyroxene-melt equilibria is performed through use of a literature survey of analyses of high-Ca pyroxene and coexisting silicate melt pairs and analyses of low-Ca pyroxene silicate melt pairs. Reference is made to a modified version of a model developed by Bottinga and Weill (1972) which more successfully accounts for ...
Roger L. Nielsen, Michael J. Drake
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Restudy of pyroxene-pyroxene equilibration temperatures for ordinary chrondrite meteorites
Contributions to Mineralogy and Petrology, 1974Experimental verification of the conclusions of Van Schmus and Koffman (1967) that the equilibration temperatures of ordinary chondrites are roughly the same regardless of classification, and that these temperatures range from 770 to 860 C. The higher average relative equilibrium temperatures found are attributed to improvements in microprobe ...
Bunch, T. E., Olsen, E.
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Geochimica et Cosmochimica Acta, 1973
Phase equilibria determined in high-pressure studies of the systems Mg2Si2O6-CaMgSi2O6 and MgSiO3-Mg3Al2Si3O12 can be used to estimate equilibration conditions of ultramafic rocks containing the assemblage enstatite + diopside + garnet. Garnet lherzolite nodules from kimberlites in northern Lesotho appear to have equilibrated in the upper mantle at ...
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Phase equilibria determined in high-pressure studies of the systems Mg2Si2O6-CaMgSi2O6 and MgSiO3-Mg3Al2Si3O12 can be used to estimate equilibration conditions of ultramafic rocks containing the assemblage enstatite + diopside + garnet. Garnet lherzolite nodules from kimberlites in northern Lesotho appear to have equilibrated in the upper mantle at ...
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The crystal chemistry of pyroxenes and amphiboles, 1. Pyroxenes
Earth-Science Reviews, 1968Abstract Experimental determination of the phase boundaries in relevant systems, and the detailed determination of crystal structures, are together yielding increased understanding of the relationships observed among the naturally occurring pyroxenes.
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