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PROGRESSIVE AQUEOUS ALTERATION OF CR CARBONACEOUS CHONDRITES

Harju, ELLEN R., Rubin, ALAN E., Ahn, INSU, , Wasson, JOHN T.(2014). PROGRESSIVE AQUEOUS ALTERATION OF CR CARBONACEOUS CHONDRITES. GEOCHIMICA ET COSMOCHIMICA ACTA, 139, 267-292. https://doi.org/10.1016/j.gca.2014.04.048

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Datasets

numbertitleMethodsvariables analyzed
3Mean composition (wt%) of glassy mesostasis in CR-chondrite chondrulesEMPTOTAL, CaO, Na2O, MnO, K2O, FeO, MgO, Al2O3, Cr2O3, SiO2
4Compositions (wt%) from individual analyses of three oxide-sulfide layers surrounding kamacite in an opaque assemblage in CR2.3 Al RaisEMPTOTAL, Si, Cr, O, Fe, S, Ni, Mn, Mg, Na, Al
5Compositions (wt%) of layers within opaque assemblages in CR2.0 GRO 95577EMP, CALCCr2O3, P2O5, NiO, TOTAL, Na2O, FeOT, MnO, SO3, SiO2, CaO, MgO, CO2, TiO2
6Average compositions (wt%) of light and dark phyllosilicates in chondrule rims from CR2.8-chondrites and pyroxene and silica in the 'honeycomb' stucture in QUE 99177EMP, CALCK2O, TOTAL, FeOT, MgO, CaO, Cr2O3, S, Al2O3, MnO, SiO2, Na2O, WOLLASTONITE, FERROSILITE
7Compositions of iron oxides (wt%) in CR chondritesEMPNa2O, Cr2O3, MgO, Al2O3, MnO, SiO2, TOTAL, FeOT, CaO, TiO2
8Matrix grid elemental concentration data for CR chondrites with subtypes ≥ 2.4EMPSiO2, MnO, FeO, K2O, S, Cr2O3, Al2O3, TOTAL, CaO, MgO, Na2O
9Average compositions (wt.%) of phases in a carbonate-rich clast in MIL 07525EMPCO2, TOTAL, MnO, SO3, CaO, MgO, FeOT, Cr2O3, Na2O, TiO2, Al2O3, SiO2
10Oxygen-isotopic compositions of CR chondritesMSCAP_DELTA_O17, DELTA_O18, DELTA_O17

Methods

method namelaboratorymethod comment More details are available for the following variables
CALCULATEDUNKNOWNcalc by diffference from 100%
ELECTRON MICROPROBEUNIVERSITY OF CALIFORNIA - LOS ANGELESJEOL electron microprobe using natural and synthetic standards, an accelerating voltage of 15 keV, 20-s counting times per element, a focused beam and ZAF corrections.
MASS SPECTROMETRYKOREA POLAR RESEARCH INSTITUTEPre-fluorination treatment

Samples

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