Allende Meteorite : Some Major and Trace Element Abundances by Neutron Activation Analysis

Morgan, John; Rebagay, T.V.; Showalter, D. L.; Nadkarni, R.A.; Gillum, D. E.; McKown, D.M.; Ehmann, W. D.

doi:10.1038/224789b0

Cited by 26 publications

(3 citation statements)

References 9 publications

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“…Bromine was determined by fusion and extraction according to the procedures of Lieberman and Ehmann (1967). Details of these latter procedures may be found in other publications of this group, (Morgan et al, 1969), or will be shortly published elsewhere.…”

Section: Methodsmentioning

confidence: 99%

Chemical Analyses of the Murchison and Lost City Meteorites

et al. 1970

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The abundances of 22 elements have been determined in the recently fallen Murchison and Lost City meteorites. Analyses were performed by 14‐MeV neutron activation, thermal neutron activation, and in a few cases by wet chemical techniques. On the basis of these data the composition of the Murchison chondrite is intermediate between previously reported analyses of Type II and Type III carbonaceous chondrites. The data for the Lost City chondrite in general agree well with mean values reported for H‐group ordinary chondrites. The low oxygen content of the Lost City chondrite suggests that previously reported oxygen abundances in H‐group falls may be too high due to oxidation in storage or weathering prior to collection

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Section: Methodsmentioning

confidence: 99%

Chemical Analyses of the Murchison and Lost City Meteorites

et al. 1970

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“…In Table , we compare our Allende data where possible with published data by Morgan et al. (), Wakita and Schmitt (), Malissa et al. (), Jarosewich (), Babechuk et al.…”

Section: Analytical Resultsmentioning

confidence: 98%

“… (1) Morgan et al. (), (2) Wakita and Schmitt (), (3) Jarosewich (); oxides converted to elemental concentrations, (4) Malissa et al. (); oxides converted to elemental concentrations, (5) Babechuk et al.…”

Section: Analytical Resultsmentioning

confidence: 99%

Testing variations within the Tagish Lake meteorite—II: Whole‐rock geochemistry of pristine samples

Blinova

Herd

Duke

2014

Meteorit & Planetary Scien

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Abstract-Four pristine specimens of the Tagish Lake C2 chondrite meteorite were previously determined through mineralogy, petrology, and organic chemistry to have been affected by aqueous alteration in the order (from least to most altered) TL5b < TL11h < TL11i, and TL11v as a mixture of the other specimens (Herd et al. 2011;Blinova et al. 2014). Here, we report the whole-rock data for a total of 65 elements for the same four Tagish Lake samples as determined by ICP-MS and ICP-AES (utilizing the Parr bomb digestion method on small samples, approximately 50 mg), and by INAA. Our data demonstrate that the determined aqueous alteration sequence has a positive correlation with trace elements, such as K and Br that are mobile during aqueous alteration, which appear to be controlled by an increase of phyllosilicates from least to most altered samples. Yet, the homogeneity of other elements suggests that elemental mass transfer occurred on a localized scale and aqueous alteration was isochemical for these elements, similar to other primitive carbonaceous chondrites. By plotting data from three samples (TL5b, TL11h, and TL11i) on a Zn/Mn versus Sc/Mn diagram, we also confirm that the Tagish Lake meteorite is not a simple mixture of CI and CM material.

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