The bulk chemistries of 33 chondrules from the Allende meteorite were determined by electron microprobe analyses and the modal recombination method. The chondrules were selected on the basis of a petrographic study of 2755 inclusions, of which 997 were chondrules, classified as recrystallized olivine, euhedral olivine, anhedral olivine, glassy/skeletal olivine, barred olivine, and pyroxene type. Each of the chondrule classes has distinct chemical characteristics: 1) pyroxene-rich chondrules are high in Na2O, and Al2O3, low in MgO, and intermediate in CaO; 2) recrystallized chondrules have the largest contents of MgO and are nepheline normative; 3) the glassy/skeletal group are FeO-enriched and are hypersthene normative; 4) barred chondrules have high TiO2, Al2O3, and CaO concentrations; 5) euhedral and anhedral olivine chondrules are compositionally similar, with the former having higher MgO, and correspondingly lower SiO2, Al2O3, FeO, CaO, and Na2O contents. -P.Br.
