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Composition of chondrule silicates in LL3-5 chondrites and implications for their nebular history and parent body metamorphism

Mccoy, T. J., Scott, E. R. D., Jones, R. H., , Taylor, G. J.(1991). Composition of chondrule silicates in LL3-5 chondrites and implications for their nebular history and parent body metamorphism. Geochimica et Cosmochimica Acta, 55(2), 601-619. https://doi.org/10.1016/0016-7037(91)90015-W

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Datasets

numbertitleMethodsvariables analyzed
2Mean compositions (wt %) of olivines in type IA chondrules in LL3.0-5 chondritesEMP, CALCTiO2, MgO, FAYALITE, MnO, TOTAL, SiO2, Cr2O3, FeO, CaO, Al2O3
3Mean compositions (wt. %) of low-Ca pyroxenes in type IA chondrules from LLJ.0-5 chondritesCALC, EMPWOLLASTONITE, TOTAL, TiO2, MgO, MnO, FERROSILITE, FeO, SiO2, Cr2O3, Al2O3, Na2O, CaO
4Composition (wt %) of mesostasis in type IA chondrules from LL3.0-5 chondritesEMPP2O5, Na2O, CaO, Al2O3, TOTAL, Cr2O3, K2O, SiO2, MnO, MgO, FeO, TiO2
5Bulk compositions (wt. %) of type IA chondrules in LL3.0-5 chondritesEMP, CALCK2O, Na2O, TOTAL, MgO, FeS, Al2O3, FeO, Cr2O3, MnO, SiO2, TiO2, CaO, P2O5
6Mean composition (wt. %) of olivines in type 11 chondrules in LL3.0-5 chondritesEMP, CALCTOTAL, Cr2O3, FAYALITE, FeO, MnO, MgO, SiO2, CaO, TiO2
7Composition (wt. %) of mesostases in type II chondrules from LL3.0- 5 chondritesEMPSiO2, K2O, MgO, FeO, TOTAL, P2O5, MnO, TiO2, CaO, Na2O, Cr2O3, Al2O3
8Bulk compositions (wt. %) of type II chondrules in LL3.0-5 chondritesEMP, CALCCaO, MnO, SiO2, K2O, Cr2O3, FeO, TOTAL, P2O5, Al2O3, MgO, Na2O, FeS, FeNi METAL, TiO2
MB-CMetBase 4050 CompilationEMPMg, Mn, Cr, Ti, Fe, Si, Ca, Na, Al

Methods

method namelaboratorymethod comment More details are available for the following variables
CALCULATEDUNKNOWNN/A
ELECTRON MICROPROBEUNKNOWNJEOL 733 microprobe, operated at an accelerating potential of 15 kV, a beam current of 20 nA, and counting times of up to 40s,Fe,Ni metal compositions were corrected using standard ZAF procedures.TiO2[MAJ], Al2O3[MAJ], Cr2O3[MAJ], MnO[MAJ], CaO[MAJ], Na2O[MAJ], P2O5[MAJ]

Samples

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