Makishima, Akio & Masuda, Akimasa (1994) Search for p-isotopic anomaly of cerium in the bulk Allende meteorite, Geochemical Journal, 28, 115-122, doi: 10.2343/geochemj.28.115. < 20200219105529-203562 > pub

Map on Earth or stone. Places and analyses are shown.

  • abstract:

    LREE (La, Ce, Nd and Sm) concentrations, and 143Nd/144Nd and 138Ce/142Ce ratios of two powder aliquots from the bulk Allende meteorite (BAM) were measured to investigate p-isotopic anomalies of Ce. Initial Ce isotope ratios of the two aliquots were calculated assuming an age of 4.56 Ga, identical with ages of other chondrites or eucrites. From the data, we conclude that there are no recognizable p-isotopic anomalies in BAM. This suggests that the existence of p-isotopic anomalies of other REE in BAM is unlikely. Our data can not, however, rule out the possibility that this is only caused by averaging of heterogeneous distribution of p-isotopic anomalies.

  • doi: 10.2343/geochemj.28.115
  • modified at 15 h ago
Img 6464@dc0ecf9fb3de4587b5e76f7 thumb Allende (T) < 20120627095122-376-076 >pub
  • classification: chondrite:carbonaceous
  • physical-form: powder
  • quantity (g): 0.11659
  • modified at 2020-02-10
name box-type global-id
binder of Search for p-isotopic anomaly of cerium in the bulk Allende meteorite pub container 20200219105631-183311
name device size global-id
Allende_d66Zn pub ICPMS Thermo-Fisher Neptune 1 20191003103144-544716
Allende_d56Fe pub ICPMS Thermo-Fisher Neptune 1 20191003113551-551109
Allende_Ni-Co-Fe-Mn-Cr pub ICPMS Thermo-Fisher Neptune 5 20191003145531-704426
Allende_Ge-As-Se-Te pub Q-ICPMS Agilent 7500cs 13 20191004113715-413110
Allende_S pub HR-ICPMS Finningan, Element 1 20191008141043-872077
Allende #2-b pub TIMS Thermo-Fisher MAT261 2 20200219112225-818392
Allende #2-a pub TIMS Thermo-Fisher MAT261 2 20200219112225-957553
Allende #1-a pub TIMS Thermo-Fisher MAT261 2 20200219112225-970612
Allende #1-b pub TIMS Thermo-Fisher MAT261 2 20200219112225-307579
Allende #2 pub TIMS Thermo-Fisher MAT261 8 20200219112225-135266
Allende #1 pub TIMS Thermo-Fisher MAT261 8 20200219112225-837111
Allende#1_TE-Max2006 pub Q-ICPMS Agilent 7500cs 50 20191021102837-449584
Allende#2_TE-Max2006 pub Q-ICPMS Agilent 7500cs 50 20191021105147-772222
name spots global-id
caption ID assembly stone
Table 1. Sm/Nd and La/Ce isotopic data for the bulk Allende meteorite pub 20200219111016-177430 Sm-Nd-La-Ce (Max, 1994) 6
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  • name
  • Makishima, Akio
  • Masuda, Akimasa