Oxygen isotopes in R-chondrite magnetite and olivine: links between R chondrites and ordinary chondrites
Greenwood, James P., Rubin, Alan E., Wasson, John T.(2000). Oxygen isotopes in R-chondrite magnetite and olivine: links between R chondrites and ordinary chondrites. Geochimica et Cosmochimica Acta, 64(22), 3897-3911. https://doi.org/10.1016/S0016-7037(00)00452-X
Datasets
| number | title | Methods | variables analyzed | ||
|---|---|---|---|---|---|
| 2 | Representative electron microprobe analyses of olivine, pyroxene, and magnetite in PCA91241 and PCA91002 | EMP | MgO, SiO2, TOTAL, FeO, CaO, Cr2O3, NiO, TiO2, MnO, Al2O3 | ||
| 3 | Oxygen isotopic composition of magnetite in the unequilibrated magnetite-bearing clast A of PCA91241,10 | IMP | DELTA_O17, CAP_DELTA_O17, DELTA_O18 | ||
| 5 | Oxygen isotopic composition of olivine in PCA91241,14 and R5 clast in PCA91002,29 measured in Mar 1999 | IMP | DELTA_O17, DELTA_O18, CAP_DELTA_O17 | ||
| 4 | Oxygen isotopic composition of olivine and low-Ca pyroxene in a POP chondrule and in other grains in the PCA91241,10 magnetite-bearing clast A | IMP | DELTA_O18, CAP_DELTA_O17, DELTA_O17 | ||
Methods
| method name | laboratory | method comment | More details are available for the following variables | |
|---|---|---|---|---|
| ELECTRON MICROPROBE | UNIVERSITY OF CALIFORNIA - LOS ANGELES | Cameca CAMEBAX (Paris, France). Analytical conditions were a 15-kV accelerating potential, 10- or 20-nA beam currents, 20-s counting times, and a focused beam. Mineral standards and PAP (ZAF) matrix corrections were employed | ||
| ION MICROPROBE | UNIVERSITY OF CALIFORNIA - LOS ANGELES | Cameca ims 1270 |
